{
  "manageEntity": {
    "action": "Save",
    "entityId": "2054690363",
    "entityType": "Track",
    "nonce": "0xd03521c02b54ddbd99c5ee44a844be3c533544b93585b878cea240b03ce060ce",
    "signature": "0x0fbc0c7fdb258953f700096b5e0c7eadba6cf85672fafbeab1f5206f7ddcbbac489e6d01c3674b74042a6c6e4a0bb6642617a0688df64fe5008403a0a5cd1f231c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}