{
  "manageEntity": {
    "action": "Save",
    "entityId": "1909923887",
    "entityType": "Track",
    "nonce": "0x2c90fccfd9e06bdd0c82116ab1af5d2caa3c5cefec811985d157545bfcd3fa33",
    "signature": "0x101f23d37207207d7665e477bb4255cd418c1789f3df8300084ac9d1658d5c310e12b64cfcc4781e6c92896f79d545fe2daad42da1a40ff9dba30e47eefe17451c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}