{
  "manageEntity": {
    "action": "Save",
    "entityId": "1473272516",
    "entityType": "Track",
    "nonce": "0xb8cb424a6dfaeb4d08e7362f1ebf4a789ed71b69911a41ff904a72486b1af7aa",
    "signature": "0xf339184e3a664497880221d83f7f830d1ffd066cc2296e551ff42b4c2a3507764622b38473ed477ac6252717912c1694d661c1aadf0d0df5f577ba853280373c1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}