{
  "manageEntity": {
    "action": "Save",
    "entityId": "1016897",
    "entityType": "Track",
    "nonce": "0xd113f12bc087c64f7f81d5237d382325d4e20bae4bade769b2b814525af2e13c",
    "signature": "0xd218e522f5d5ae6729ed2e7eaf2349a3989657502477706a19bb277dc6f7cc38515d759e21c3a1530fbfe3933f31bd4808941e14c58945efe850bad2da3463c51b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}