{
  "manageEntity": {
    "action": "Save",
    "entityId": "537169",
    "entityType": "Track",
    "nonce": "0xd25676bc56231fc3acbf77c3aa65cfa208f38b3f3213efdc5c5bb19251af4b9e",
    "signature": "0x14271c5881aff1164e1aa0d365b418b421e69278acd2fafd0ec982a5f2699f956d0ebc8643ae92ce4fdee28fa54eb1ad90647fa5109d0e630c56057923e952111c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}