{
  "manageEntity": {
    "action": "Save",
    "entityId": "252081",
    "entityType": "Track",
    "nonce": "0xeb761ee749c8d2ddaec68006584c20e6f6ed169217c827e58531786675ded11d",
    "signature": "0x3a7f687bae520a9000a13cca964894bfb333177e4dbb61b394a5ffababbed48f24ffce50aff51c66e5bf00f2829adc91fd22eb770361da1e94686f1a2179ba8d1c",
    "signer": "0x0168976438910D2f5330323a0d0141Fb4Af95032",
    "userId": "317847"
  }
}