{
  "manageEntity": {
    "action": "Save",
    "entityId": "863065118",
    "entityType": "Track",
    "nonce": "0x205e1a6a4410321bafe58b5ff8b220442e4809bfe9fd3239a7d16e5050a24014",
    "signature": "0xb882bd49d1f2623982b61f105d389997ecede763337c86019ce093d94617f74d6a45b8f2dd41ec01337b95fc66f8ce46f0c66c0024299bda8d0fdec060a775831c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}