Ajax post to Controller not working

Question

Below is my code 

var model = {
            Name: name,

            Gender: gender,
            Subjects: subs  // array of Subject object (Id,Name)


        };

        $.ajax({
            type: "post",
            url:"/home/Save",
            dataType: "json",
            contentType: "application/json;charset=utf-8",
            data:{Model:model},
            cache: false,
            success:function(){}

        })