{
  "manageEntity": {
    "action": "Save",
    "entityId": "833568398",
    "entityType": "Track",
    "nonce": "0x76885c4dd94ce4a9ebce3c4148b2974f9c370f09868860f3e971b898fd0822c0",
    "signature": "0x0e28a563be16f8863d8524c5f5a03998b3aa7f5e6c2672efc7e2047b9b9201a4349d77be6b59af77ebf5b940106d3e36a8cd5e848b6a24851f3764510f3b07fe1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}