{
  "manageEntity": {
    "action": "Create",
    "entityId": "1544755725",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"Yassssssss\",\"entity_id\":1489364244,\"track_timestamp_s\":23}}",
    "nonce": "0x55adab4cd2a0d7182a66c79f9dc8377b3cf5e359aa5d6ce70d3b45784d323950",
    "signature": "0x4c994aa10cc227dee59aadf67a560709dff55fc40dd65193f63cf042278b20476f77c7ecc59d090b941274f04e578be74b2ad65bfd6c3f5302c7e1de06ac3d771b",
    "signer": "0x44577d90A171E208f723dEEa39019067c9Dd87E8",
    "userId": "853591809"
  }
}