ASP.NET

public class ApplicationLinkViewModel : MappableModel
   {
       public string ApplicationLinkId { get; set; }

       public string ApplicationId { get; set; }

       public string DisplayText { get; set; }

       public string Link { get; set; }
   }

[HttpPost]
       public JsonResult SaveLink(ApplicationLinkViewModel link)
       {
         var responseModel = new ResponseModel();
         return this.Json(responseModel);
       }

$.ajax({
        type: "POST",
        cache: false,
        dataType: 'json',
        url: "Item/SaveLink",
        data: JSON.stringify({ ApplicationId : "1", DisplayText: "test", Link : "linked", ApplicationLinkId: "2" }),
        contentType: 'application/json; charset=utf-8',
        success: function(data) {
            if (data.Success) {
                window.searchApplications();
                window.showDetails(applicationId);
            }
        },
        error: function(data) {
            alert("Error occurred : \n\n" + data.Message);
        }
    });

public JsonResult SaveLink(ApplicationLinkViewModel linkViewModel