{
  "manageEntity": {
    "action": "Save",
    "entityId": "2081490722",
    "entityType": "Track",
    "nonce": "0x25401d19c93fad405468c7c50ce1c56e0dd33b3c6b0ed9fc21e3bfb6087b7c70",
    "signature": "0xc5b81d89ac56f067ae3546aad4638c632bdb0a9766b70f8d054058481561348c38c8338a11a3e28ea906ca33d327f01576c76a20007a6664d8f06d87a4c4b3271c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}