{
  "manageEntity": {
    "action": "Save",
    "entityId": "2101654740",
    "entityType": "Track",
    "nonce": "0x58c7134f44a8500e35b7ed04a2d158110ed333abbf3fe7ef811c57755d710e14",
    "signature": "0xcc64d978aded3dc5ef3442d4c888a0dbfe384e796f5f167a721bea67e451b7dc3ff5d01aa0fe9b13e6cf78f91db6057fdcf39a5847313c1fe1a6b802c3124e3b1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}