{
  "manageEntity": {
    "action": "Save",
    "entityId": "140947641",
    "entityType": "Track",
    "nonce": "0xe090b2242c59e48c68b3d29cc52e2540a92763e3deebef7a48997cb0203dddd7",
    "signature": "0x7a12129426167cb167799a6e56b55f27e91604188f29d8649c03c93fd5e245494a25a24ce0222684a9c54d49bf85753906b54c1fb3aa0c2adc51d2489f9669ae1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}