{
  "manageEntity": {
    "action": "Save",
    "entityId": "1871277887",
    "entityType": "Track",
    "nonce": "0x09c58385b6f9c0ca0f26d80601cd669c9522f70b2a01f721d21ec17d68af4517",
    "signature": "0xc0b564cc6a7adb2bddcc3fcd94262b826c3cc3846ddece90d64317c23051518a70ff36336f055d04c603c1a90654beded00ff88434048049e5fca0d47353c12a1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}