{
  "manageEntity": {
    "action": "Save",
    "entityId": "1805594232",
    "entityType": "Track",
    "nonce": "0x33c9d16d94bc864f487c9e44c4f216dc7e11c732d5d2c77fda7259227ea7cb41",
    "signature": "0xc0bdcf82b7d6f77f658bf711ec3522d15466836d782c9e299f31cda11b7bd63100b1efb12f260915ad1657d72f22dcb9d20870e65ff1d23e32c217ad437137ee1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}