c# – 连接到MailChimp v3.0 API

我想发送一些订阅者.我究竟做错了什么？我可能正在尝试以错误的方式发送apikey(HTTP基本身份验证).文档在这里,但我无法使其工作：http://developer.mailchimp.com/documentation/mailchimp/guides/get-started-with-mailchimp-api-3/.

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(@"https://us12.api.mailchimp.com/3.0/lists/<listnumber>/members/");

string json = @"
    {
        ""email_address"": ""test@test.com"",""status"": ""subscribed"",""merge_fields"": {
                    ""FNAME"": ""Urist"",""LNAME"": ""McVankab""
        }
    }
";

byte[] data = Encoding.UTF8.GetBytes(json);

request.Method = "POST";
request.Headers.Add("user","<mykeynumber>");
request.ContentType = "application/json";
request.ContentLength = data.Length;

using (System.IO.Stream stream = request.GetRequestStream())
{
    stream.Write(data,data.Length);
}