{
  "manageEntity": {
    "action": "Save",
    "entityId": "1822013081",
    "entityType": "Track",
    "nonce": "0x3d7b9dffec3a0f0ffc5821c542257895e0f58c2837b23bb1d7f54b55e3a34bab",
    "signature": "0x350f432b7344184bbf36c0383c7231b4e78a0adedfb152c54a677b78b891e647149884c6b69346c803b23cc5136d7a5d1b69f346a75906ee49e4d5fc8e7e51991c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}