{
  "manageEntity": {
    "action": "Save",
    "entityId": "947516038",
    "entityType": "Track",
    "nonce": "0x5f6184760162bfb37014b2620f3fb8f1046e9db7dc348db48fefc49c46cbbe93",
    "signature": "0xb96af17a744d711a5171ca9170b35f9d632da9625cf9d0ec374c96c070a165cd5cbe9796000bb236b3b388303eb9946e4a342dde41e37cf90413a95a3bc3fdd51b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}