{
  "manageEntity": {
    "action": "Save",
    "entityId": "1048716",
    "entityType": "Track",
    "nonce": "0x93971e8f2782db88e78d1dfe1534cef25a0539e383c2b41632dd753f03436b62",
    "signature": "0xa7bfa97ce94ffefea01c2cd5957830177906521b3c44acb386071d55c5efb3160fdd809b34215a5c9142acae3c9417610a379e3b95044803b0732b61866f931d1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}