matrix-spec/event-schemas/examples/m.presence

{
  "$ref": "core/event.json",
  "sender": "@example:localhost",
  "type": "m.presence",
  "content": {
    "avatar_url": "mxc://localhost:wefuiwegh8742w",
    "last_active_ago": 2478593,
    "presence": "online",
    "currently_active": false
  }
}