public async Task <string> ExecuteRequest(LambdaRequest request)
        {
            var payloadBytes = Convert.FromBase64String(request.Base64Payload);
            var serviceType  = _serviceMap.GetType(request.Service);

            var invokerType = typeof(Invoker <>).MakeGenericType(serviceType);
            var invoker     = _serviceProvider.GetRequiredService(invokerType);

            var invokeMethod = invoker.GetType().GetMethod("Invoke");

            var responseTask = (Task <Response>)invokeMethod.Invoke(invoker, new object[] { payloadBytes });

            var response = await responseTask;

            var serializer = _serviceProvider.GetRequiredService <IProxySerializer>();

            var serializedResponse = serializer.ResponseSerializer.SerializeResponse(response);

            var result = Convert.ToBase64String(serializedResponse);

            return(result);
        }