{
  "manageEntity": {
    "action": "Save",
    "entityId": "1705348788",
    "entityType": "Track",
    "nonce": "0x7689c76c6d509016e8e214f855ab5d510f137135edf24143f5b8fc51800fc27e",
    "signature": "0x1199690b01235ab77d3f60d79be1d4defad1f1bf5dae721cda874f7d96ca1ee04b186abd182014675d82b76b19fa965fd9995b60b7b18c43b86ad6e6c1dc4e2d1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}