{
  "manageEntity": {
    "action": "Save",
    "entityId": "1758002389",
    "entityType": "Track",
    "nonce": "0xdf338d5301689f6e72a4a768b8021831b8e7dbc762d64fe302aa57cd1245fd0c",
    "signature": "0x127082236ae211cf342e98f9d5b1f454cfc3cd8133e217542cf18106de93338978e89c3fc892afc09ba09846ac314780dd21742bba5a551cab0e32bcfad159f51c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}