HTTP request C#

request.cs

// Create Cart
using (var client = new HttpClient())
{
   // assembledEndpoint: {{host}}/{{projectKey}}/me/carts
   var endpoint = assembledEndpoint;
   var body = new Dictionary<string, string>
   {
     { "currency", "USD" },
     { "shippingAddress", {
            "country": "US"
        }
     },

   };
   var content = new FormUrlEncodedContent(body);
   var response = await client.PostAsync(endpoint, content);
   var responseString = await response.Content.ReadAsStringAsync();
}