public async Task <HttpResponseMessage> Put()
        {
            HttpContent requestContent = Request.Content;
            string      jsonContent    = await requestContent.ReadAsStringAsync();

            var imageFromFrontend = JsonConvert.DeserializeObject <FaceImage>(jsonContent);

            try
            {
                await _dataSource.AddFaceImage(imageFromFrontend);

                return(JsonResponse.JsonHttpResponse <Object>(true));
            }
            catch (Exception e)
            {
                return(JsonResponse.JsonHttpResponse <Object>(null));
            }
        }