{
  "manageEntity": {
    "action": "Save",
    "entityId": "1111254",
    "entityType": "Track",
    "nonce": "0xac19f81b6e97fd5dee35e1bb3dc4feb40dcdf086ca7d058ee2dcf88130333d83",
    "signature": "0xf32525a7ae74472c17321663c2d377817e1d9a1bd0ec54145f4fb73767f316c14c7dffc811e803cf8bd24e185490213133596109f980956a7fbd41b9c278e7a01c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}