{
  "sessionId": "session-fixture",
  "correlationId": "gateway-correlation-authenticate-return-value-only",
  "kind": "MX_COMMAND_KIND_AUTHENTICATE_USER",
  "protocolStatus": {
    "code": "PROTOCOL_STATUS_CODE_OK",
    "message": "AuthenticateUser reached MXAccess."
  },
  "returnValue": {
    "dataType": "MX_DATA_TYPE_INTEGER",
    "variantType": "VT_I4",
    "int32Value": 7
  },
  "diagnosticMessage": "Legacy worker populated only return_value; the typed AuthenticateUser payload is absent."
}
