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Alice updates her profile and her followers can retrieve the Update activity

given: "Alice" created an actor on "banach" called "Alice" with username "Alice"

send.Alice.request.create_actor
{
  "base_url": "http://banach",
  "preferred_username": "Alice",
  "profile": {},
  "automatically_accept_followers": null,
  "name": null
}
receive.Alice.response.create_actor
{
  "attachment": null,
  "published": "2026-03-20T15:22:41.451219",
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    "https://w3id.org/security/v1",
    {
      "manuallyApprovesFollowers": "as:manuallyApprovesFollowers"
    }
  ],
  "publicKey": {
    "id": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w#legacy-key-1",
    "owner": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w",
    "publicKeyPem": "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA7U7YTv7l9zNlT8cgulmc\nbRvKK4DLWTqXDVa4fFD9wWMq7OPcBR3ntZ7ySCwpqxhfMwD5caXKonRieGGjkBR6\nOs3LcF3HLCNria1oSs6MOKKvZ4ASzZgJcZRSrisQ51WnHxh+I5fJnMvdmnbUTSxD\nP837S4eAqm6aMrSRoUvclUQwQp3DodBH2nfdunt3cN/mg81GIofZR+w1x8eTmXUV\n7YP3p15uzM4aWTDBg+ONl1yR1ar1Ssd6mu7wmDF9SqUc2TqgoYqk+uMy9edSVxMa\nXqGfbm6tyS01AI4zFKZ3iD+T6D2PabW6gvoNqhW9+NssrtzLrYUAzY55XM9vUW3d\nmwIDAQAB\n-----END PUBLIC KEY-----\n"
  },
  "id": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w",
  "type": "Person",
  "inbox": "http://banach/inbox/PMh9Rr4U7Spie3f4nYEVSw",
  "outbox": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w/outbox",
  "followers": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w/followers",
  "following": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w/following",
  "preferredUsername": "Alice",
  "name": "Alice",
  "identifiers": [
    "acct:Alice@banach",
    "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w"
  ],
  "endpoints": {
    "sharedInbox": "http://banach/shared_inbox"
  },
  "manuallyApprovesFollowers": true
}

given: "Bob" created an actor on "banach" called "Bob" with username "Bob"

send.Bob.request.create_actor
{
  "base_url": "http://banach",
  "preferred_username": "Bob",
  "profile": {},
  "automatically_accept_followers": null,
  "name": null
}
receive.Bob.response.create_actor
{
  "attachment": null,
  "published": "2026-03-20T15:22:42.018341",
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    "https://w3id.org/security/v1",
    {
      "manuallyApprovesFollowers": "as:manuallyApprovesFollowers"
    }
  ],
  "publicKey": {
    "id": "http://banach/actor/DDXThniFDV4Bz8YK5ZsgjA#legacy-key-1",
    "owner": "http://banach/actor/DDXThniFDV4Bz8YK5ZsgjA",
    "publicKeyPem": "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApIa1+BkRUSTtUzx6is49\ncnG/kUKp/6o1Mi+Gsz5JtySXz5qAxHuWXuWWmvoM3Z/HYJHVhyBeTbv7orZuy94J\nMfHswZqb5HjP6c3YGwSWMgSFKR9QHWd5Lmj9w/BrohYZFdtT78wQv/GkUoMZacnP\n0m5BQ9LJK0+xjmYOumTec0ZtTz28ZJEXV0qHPTaZbPfKvH16667O/YWeDQXxxZGq\nLIW0uDeQ5Wj5yWTmBNtcEfRq8XX6BF54eRLNchhhCdfBJNXYbSxhXEFAFwnFj1oT\nguAe4C2OGOmrYDcNGhlRJiBcHd9Q0ZXOYQMHZ9tOVymEujriL7CS+QwvwYup14do\nAwIDAQAB\n-----END PUBLIC KEY-----\n"
  },
  "id": "http://banach/actor/DDXThniFDV4Bz8YK5ZsgjA",
  "type": "Person",
  "inbox": "http://banach/inbox/nLM5xC6rIK8U4noIReBcFw",
  "outbox": "http://banach/actor/DDXThniFDV4Bz8YK5ZsgjA/outbox",
  "followers": "http://banach/actor/DDXThniFDV4Bz8YK5ZsgjA/followers",
  "following": "http://banach/actor/DDXThniFDV4Bz8YK5ZsgjA/following",
  "preferredUsername": "Bob",
  "name": "Bob",
  "identifiers": [
    "acct:Bob@banach",
    "http://banach/actor/DDXThniFDV4Bz8YK5ZsgjA"
  ],
  "endpoints": {
    "sharedInbox": "http://banach/shared_inbox"
  },
  "manuallyApprovesFollowers": true
}

when: "Bob" sends "Alice" a Follow Activity

send.Bob.trigger.send_message
{
  "actor": "http://banach/actor/DDXThniFDV4Bz8YK5ZsgjA",
  "data": {
    "@context": "https://www.w3.org/ns/activitystreams",
    "type": "Follow",
    "actor": "http://banach/actor/DDXThniFDV4Bz8YK5ZsgjA",
    "to": [
      "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w"
    ],
    "id": "follow:5fdf4eb2-1df4-4ffa-9eb8-34d30457085b",
    "published": "2026-03-20T15:22:42Z",
    "object": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w"
  }
}
receive.Bob.outgoing.Follow
{
  "data": {
    "raw": {
      "@context": "https://www.w3.org/ns/activitystreams",
      "type": "Follow",
      "actor": "http://banach/actor/DDXThniFDV4Bz8YK5ZsgjA",
      "to": [
        "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w"
      ],
      "id": "follow:5fdf4eb2-1df4-4ffa-9eb8-34d30457085b",
      "published": "2026-03-20T15:22:42Z",
      "object": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w"
    }
  },
  "actor": "http://banach/actor/DDXThniFDV4Bz8YK5ZsgjA",
  "event_type": "outgoing",
  "history_id": null
}
receive.Alice.incoming.Follow
{
  "data": {
    "raw": {
      "@context": "https://www.w3.org/ns/activitystreams",
      "type": "Follow",
      "actor": "http://banach/actor/DDXThniFDV4Bz8YK5ZsgjA",
      "to": [
        "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w"
      ],
      "id": "follow:5fdf4eb2-1df4-4ffa-9eb8-34d30457085b",
      "published": "2026-03-20T15:22:42Z",
      "object": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w"
    }
  },
  "actor": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w",
  "event_type": "incoming",
  "history_id": null
}

when: "Alice" sends an Accept to this Follow Activity

send.Alice.trigger.send_message
{
  "actor": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w",
  "data": {
    "@context": "https://www.w3.org/ns/activitystreams",
    "type": "Accept",
    "actor": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w",
    "to": [
      "http://banach/actor/DDXThniFDV4Bz8YK5ZsgjA"
    ],
    "published": "2026-03-20T15:22:42Z",
    "object": "follow:5fdf4eb2-1df4-4ffa-9eb8-34d30457085b",
    "id": "accept:8e15837e-334a-4eef-9289-b8486cfd1937"
  }
}
receive.Alice.outgoing.Accept
{
  "data": {
    "raw": {
      "@context": "https://www.w3.org/ns/activitystreams",
      "type": "Accept",
      "actor": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w",
      "to": [
        "http://banach/actor/DDXThniFDV4Bz8YK5ZsgjA"
      ],
      "published": "2026-03-20T15:22:42Z",
      "object": "follow:5fdf4eb2-1df4-4ffa-9eb8-34d30457085b",
      "id": "accept:8e15837e-334a-4eef-9289-b8486cfd1937"
    }
  },
  "actor": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w",
  "event_type": "outgoing",
  "history_id": null
}
receive.Bob.incoming.Accept
{
  "data": {
    "raw": {
      "@context": "https://www.w3.org/ns/activitystreams",
      "type": "Accept",
      "actor": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w",
      "to": [
        "http://banach/actor/DDXThniFDV4Bz8YK5ZsgjA"
      ],
      "published": "2026-03-20T15:22:42Z",
      "object": "follow:5fdf4eb2-1df4-4ffa-9eb8-34d30457085b",
      "id": "accept:8e15837e-334a-4eef-9289-b8486cfd1937"
    }
  },
  "actor": "http://banach/actor/DDXThniFDV4Bz8YK5ZsgjA",
  "event_type": "incoming",
  "history_id": null
}

when: "Alice" updates her profile

send.Alice.trigger.update_actor
{
  "actor": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w",
  "profile": {
    "summary": "I love cows"
  },
  "autoFollow": null,
  "actions": []
}
receive.Alice.outgoing.Update
{
  "data": {
    "raw": {
      "@context": "https://www.w3.org/ns/activitystreams",
      "type": "Update",
      "actor": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w",
      "to": [
        "https://www.w3.org/ns/activitystreams#Public"
      ],
      "cc": [
        "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w/followers"
      ],
      "published": "2026-03-20T15:22:42Z",
      "object": {
        "attachment": null,
        "published": "2026-03-20T15:22:41.451219",
        "@context": [
          "https://www.w3.org/ns/activitystreams",
          "https://w3id.org/security/v1",
          {
            "manuallyApprovesFollowers": "as:manuallyApprovesFollowers"
          }
        ],
        "publicKey": {
          "id": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w#legacy-key-1",
          "owner": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w",
          "publicKeyPem": "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA7U7YTv7l9zNlT8cgulmc\nbRvKK4DLWTqXDVa4fFD9wWMq7OPcBR3ntZ7ySCwpqxhfMwD5caXKonRieGGjkBR6\nOs3LcF3HLCNria1oSs6MOKKvZ4ASzZgJcZRSrisQ51WnHxh+I5fJnMvdmnbUTSxD\nP837S4eAqm6aMrSRoUvclUQwQp3DodBH2nfdunt3cN/mg81GIofZR+w1x8eTmXUV\n7YP3p15uzM4aWTDBg+ONl1yR1ar1Ssd6mu7wmDF9SqUc2TqgoYqk+uMy9edSVxMa\nXqGfbm6tyS01AI4zFKZ3iD+T6D2PabW6gvoNqhW9+NssrtzLrYUAzY55XM9vUW3d\nmwIDAQAB\n-----END PUBLIC KEY-----\n"
        },
        "id": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w",
        "type": "Person",
        "inbox": "http://banach/inbox/PMh9Rr4U7Spie3f4nYEVSw",
        "outbox": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w/outbox",
        "followers": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w/followers",
        "following": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w/following",
        "preferredUsername": "Alice",
        "name": "Alice",
        "summary": "I love cows",
        "identifiers": [
          "acct:Alice@banach",
          "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w"
        ],
        "endpoints": {
          "sharedInbox": "http://banach/shared_inbox"
        },
        "manuallyApprovesFollowers": true
      },
      "id": "http://banach/object/019d0bd7-7556-7f23-a4b9-29f45ee425ac"
    }
  },
  "actor": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w",
  "event_type": "outgoing",
  "history_id": null
}
receive.Bob.incoming.Update
{
  "data": {
    "raw": {
      "@context": "https://www.w3.org/ns/activitystreams",
      "type": "Update",
      "actor": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w",
      "to": [
        "https://www.w3.org/ns/activitystreams#Public"
      ],
      "cc": [
        "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w/followers"
      ],
      "published": "2026-03-20T15:22:42Z",
      "object": {
        "attachment": null,
        "published": "2026-03-20T15:22:41.451219",
        "@context": [
          "https://www.w3.org/ns/activitystreams",
          "https://w3id.org/security/v1",
          {
            "manuallyApprovesFollowers": "as:manuallyApprovesFollowers"
          }
        ],
        "publicKey": {
          "id": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w#legacy-key-1",
          "owner": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w",
          "publicKeyPem": "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA7U7YTv7l9zNlT8cgulmc\nbRvKK4DLWTqXDVa4fFD9wWMq7OPcBR3ntZ7ySCwpqxhfMwD5caXKonRieGGjkBR6\nOs3LcF3HLCNria1oSs6MOKKvZ4ASzZgJcZRSrisQ51WnHxh+I5fJnMvdmnbUTSxD\nP837S4eAqm6aMrSRoUvclUQwQp3DodBH2nfdunt3cN/mg81GIofZR+w1x8eTmXUV\n7YP3p15uzM4aWTDBg+ONl1yR1ar1Ssd6mu7wmDF9SqUc2TqgoYqk+uMy9edSVxMa\nXqGfbm6tyS01AI4zFKZ3iD+T6D2PabW6gvoNqhW9+NssrtzLrYUAzY55XM9vUW3d\nmwIDAQAB\n-----END PUBLIC KEY-----\n"
        },
        "id": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w",
        "type": "Person",
        "inbox": "http://banach/inbox/PMh9Rr4U7Spie3f4nYEVSw",
        "outbox": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w/outbox",
        "followers": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w/followers",
        "following": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w/following",
        "preferredUsername": "Alice",
        "name": "Alice",
        "summary": "I love cows",
        "identifiers": [
          "acct:Alice@banach",
          "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w"
        ],
        "endpoints": {
          "sharedInbox": "http://banach/shared_inbox"
        },
        "manuallyApprovesFollowers": true
      },
      "id": "http://banach/object/019d0bd7-7556-7f23-a4b9-29f45ee425ac"
    }
  },
  "actor": "http://banach/actor/DDXThniFDV4Bz8YK5ZsgjA",
  "event_type": "incoming",
  "history_id": null
}

then: "Bob" receives an activity

then: "Bob" can fetch this activity

send.Bob.request.fetch
{
  "actor": "http://banach/actor/DDXThniFDV4Bz8YK5ZsgjA",
  "uri": "http://banach/object/019d0bd7-7556-7f23-a4b9-29f45ee425ac"
}
receive.Bob.response.fetch
{
  "actor": "http://banach/actor/DDXThniFDV4Bz8YK5ZsgjA",
  "uri": "http://banach/object/019d0bd7-7556-7f23-a4b9-29f45ee425ac",
  "data": {
    "@context": "https://www.w3.org/ns/activitystreams",
    "type": "Update",
    "actor": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public"
    ],
    "cc": [
      "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w/followers"
    ],
    "published": "2026-03-20T15:22:42Z",
    "object": {
      "attachment": null,
      "published": "2026-03-20T15:22:41.451219",
      "@context": [
        "https://www.w3.org/ns/activitystreams",
        "https://w3id.org/security/v1",
        {
          "manuallyApprovesFollowers": "as:manuallyApprovesFollowers"
        }
      ],
      "publicKey": {
        "id": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w#legacy-key-1",
        "owner": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w",
        "publicKeyPem": "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA7U7YTv7l9zNlT8cgulmc\nbRvKK4DLWTqXDVa4fFD9wWMq7OPcBR3ntZ7ySCwpqxhfMwD5caXKonRieGGjkBR6\nOs3LcF3HLCNria1oSs6MOKKvZ4ASzZgJcZRSrisQ51WnHxh+I5fJnMvdmnbUTSxD\nP837S4eAqm6aMrSRoUvclUQwQp3DodBH2nfdunt3cN/mg81GIofZR+w1x8eTmXUV\n7YP3p15uzM4aWTDBg+ONl1yR1ar1Ssd6mu7wmDF9SqUc2TqgoYqk+uMy9edSVxMa\nXqGfbm6tyS01AI4zFKZ3iD+T6D2PabW6gvoNqhW9+NssrtzLrYUAzY55XM9vUW3d\nmwIDAQAB\n-----END PUBLIC KEY-----\n"
      },
      "id": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w",
      "type": "Person",
      "inbox": "http://banach/inbox/PMh9Rr4U7Spie3f4nYEVSw",
      "outbox": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w/outbox",
      "followers": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w/followers",
      "following": "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w/following",
      "preferredUsername": "Alice",
      "name": "Alice",
      "summary": "I love cows",
      "identifiers": [
        "acct:Alice@banach",
        "http://banach/actor/5gZZv6qHqJB74M8-CNjw_w"
      ],
      "endpoints": {
        "sharedInbox": "http://banach/shared_inbox"
      },
      "manuallyApprovesFollowers": true
    },
    "id": "http://banach/object/019d0bd7-7556-7f23-a4b9-29f45ee425ac"
  }
}