var baseAddress = new Uri("https://steamcommunity.com");
            var cookieContainer = new CookieContainer();
            using (var handler = new HttpClientHandler() { CookieContainer = cookieContainer })
            using (httpClient = new HttpClient(handler) { BaseAddress = baseAddress })
            {
                cookieContainer.Add(baseAddress, new Cookie("steamLoginSecure", "123"));
                HttpResponseMessage response =  await httpClient.GetAsync("/market/pricehistory/?country=DE&currency=3&appid=440&market_hash_name=Specialized%20Killstreak%20Brass%20Beast");
                if (response.IsSuccessStatusCode)
                {
                    data = await response.Content.ReadAsStringAsync();
                }
                else
                {
                    throw new Exception(response.ReasonPhrase);
                }
            }