Javascript将列表发送到asmx服务

我用.net web表单创建了一个asmx服务，如下所示。AddUsers方法接受List模型。

namespace ProjectName.AsmxServices.Test
 {
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
[ScriptService]
 public class Test: System.Web.Services.WebService
   {
    [WebMethod]
    public void AddUsers(List<UserDetail> userList)
    {
        // Add User List
    }
   // Here is my model
   public class UserDetail
    {
        public int Id{ get; set; }
        public string Name { get; set; }
        public string Surname{ get; set; }
        public DateTime BirthDate { get; set; }
    }
   }
 }

现在，我想用Javascript发布List模型。但是，我如何用javascript将这个模型创建为列表呢？

         $("#addUsers").click(function () {
         var data = ??  **How can I create a List<UserDetail> model.**
         $.ajax({
            url: '../AsmxServices/Test.asmx/AddUsers',
            type: "POST",
            dataType: "json",
            contentType: "application/json; charset=utf-8",
            data: data
            success: function (result) {
                console.log("Good job!");
            },
            error: function (result) {
                console.log("Failed");
            }
        });
    });

我现在想创建这个模型列表硬编码。然后我会更改我的代码。

var usersList = 
    {
        userList: 
            [
                {Id: 1, Name: "name1"}, 
                {Id: 2, Name: "name2"}
            ]
    };
var data = JSON.stringify(usersList);