{
  "manageEntity": {
    "action": "Save",
    "entityId": "799541",
    "entityType": "Track",
    "nonce": "0x7198e5bbecb2ff36b85b6ab2fbd7aec261a785cd8d33716fb5c88c821fd75896",
    "signature": "0xcfbbbde6b2293b09222fe93712b5f161a65a2f7326b8e6ca433533e716ec330362c160805aa19091d157c854064f092650859ce0b43d1df3ff6a869817ec8db21c",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}