{
  "manageEntity": {
    "action": "Save",
    "entityId": "1128040",
    "entityType": "Track",
    "nonce": "0xdaf01a647722f29a10e41977ec6b0b03f64ee03fba4c28909034ffa111883a51",
    "signature": "0x911447189ed999ec8e2da9904d62abd7a7d0b756f64ffbed03b936a226cd7ffd14db9d418e8b5656bb33bfcce8c31664dcab54f848e9392c782a585d5f0f901a1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}