{
  "data": {
    "id": 1,
    "file": "https://example.org/file.png",
    "attachable_type": "Topic",
    "attachable_id": 187,
    "created_at": "2017-03-01T05:48:09.533Z",
    "updated_at": "2017-03-01T05:48:09.533Z"
  }
}