{
  "manageEntity": {
    "action": "Create",
    "entityId": "1256592293",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":52309,\"entity_id\":1658793638,\"body\":\"dayummm!\",\"track_timestamp_s\":58}}",
    "nonce": "0x2d56d6ff1442250dc041abf1e4666b5d6664bb5ca8fcc05a685ae253c218ba02",
    "signature": "0xe2aed4747a1666e139ae6ca7c01c388c90d4f73eab0b0afc19385ee5364c54dc1c028e7d2f4dad590adb24df774d5d4bb053c3fa6129c581c9847fbeff643c681c",
    "signer": "0x1CE93c43F8574f553E8071e946654066188B61BC",
    "userId": "52309"
  }
}