{
  "manageEntity": {
    "action": "Save",
    "entityId": "863521811",
    "entityType": "Track",
    "nonce": "0x83a4ab7289f6cf8f0cf63c27b8908ec88826fa851f3be6aeb48e1abc7caf41ee",
    "signature": "0x56a0812c75c2bb53eb0e1a4bbfc812cb4a88fa4e805359d150aeed6eb052c5a4365e29172ab1256a263c6d50f925dc9317184bd945b5d30df4cf5f00598999621b",
    "signer": "0x71114Ff581aA73d1F4b6429D7713914f10e8e90B",
    "userId": "894513731"
  }
}