{
  "manageEntity": {
    "action": "Save",
    "entityId": "2146317060",
    "entityType": "Track",
    "nonce": "0x673e4d7032e4ff0d27c1651cdc6871c2b3e0b114bb41555e246990cffdeab450",
    "signature": "0x852799347c837ee7616794da56e455d9758ea017143e266a68f2671f5c9a560d2b9a6d0de4889119d4d9c6f28553e5a248aa71de537949e579daccbb447cf6cd1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}