{
  "manageEntity": {
    "action": "Save",
    "entityId": "933856252",
    "entityType": "Track",
    "nonce": "0x4a25d6f11297e41000671e5dbe214125dab26af602afb1fe7cf80721dfd2fc03",
    "signature": "0xb9a06999f5eb847d8881a3c328fc805b91d3242e97d90ca099df69bb990e792b74019829c8a9c8733cc66b180346d587fd174c470ed23098cf26989e80e176331c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}