{
  "manageEntity": {
    "action": "Save",
    "entityId": "797996940",
    "entityType": "Track",
    "nonce": "0xe8c7f674e427198cdb59865dc678fda1545604e259a87790717f3696f5f1345b",
    "signature": "0xe7feb9c097e669f788a96c5079e144d9c2def3f8cd97ecafdf7da6f9a08237b260553751d834a4038339b93b1829198d862fa47d285c38b2c732aaff3dc456b61b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}