{
  "manageEntity": {
    "action": "Save",
    "entityId": "61941",
    "entityType": "Track",
    "nonce": "0xcf3c31507d77a5c241c41ed8bf132c72ee9393817993cbcbabb25e5522567ef0",
    "signature": "0xe0025da76d7fe80f3702a2cd9bc42dd5b5814003dc75480ad5f581dcae3a9d7c3e277083e081a11268da81ef17c23bec802c4ae324d643fa235b951549857ab81b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}