{
  "$ref": "core/state_event.json",
  "type": "m.room.avatar",
  "state_key": "",
  "content": {
    "info": {
        "h": 398,
        "w": 394,
        "mimetype": "image/jpeg",
        "size": 31037
    },
    "url": "mxc://example.org/JWEIFJgwEIhweiWJE"
  }
}