{
  "manageEntity": {
    "action": "Save",
    "entityId": "2010975197",
    "entityType": "Track",
    "nonce": "0x0b2f8e0adf428085a9cac26c328820cf903d581792fcd068fadbc1bbab882d11",
    "signature": "0x60e5a4e39385f57f5460b30b950c8b4fda39eead8d8915cb0527f0eab4d4214967b3071ce628dc129b33d8d65fd172ac0f20a7dd71a9c6527f29f75ddd57b60f1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}