templateProperties = {}

$.ajax({
    beforeSend:updateTemplateProperties,
    type: "POST",
    url: templatePropertiesUpdateUrl,
    contentType: 'application/json; charset=utf-8',
    dataType: 'json',
    data: JSON.stringify({ "templateProperties": templateProperties }),
}).done(function (data) {
    log(data.d);
});

updateTemplateProperties = function () {

    templateProperties.NameFont = "qwq";
    templateProperties.NameBold = true;
    templateProperties.NameItalic = false;
    templateProperties.NameFontColor = "#FFF";
    templateProperties.NamePositionX = 52;
    templateProperties.NamePositionY = 896;
    templateProperties.NameSize = 23;

    templateProperties.DateFont = "ssda";
    templateProperties.DateBold = false;
    templateProperties.DateItalic = true;
    templateProperties.DateFontColor = "#EEE";
    templateProperties.DatePositionX = 47;
    templateProperties.DatePositionY = 236;
    templateProperties.DateSize = 12;

}

[WebMethod]
public static string UpdateTemplateProperties(TemplateProperties templateProperties)
{
    var serializer = new JavaScriptSerializer();
    return serializer.Serialize(templateProperties);
}

[Serializable]
public class TemplateProperties
{
    public  string NameFont { get; set; }
    public  string NameBold { get; set; }
    public  string NameItalic { get; set; }
    public  string NameFontColor { get; set; }
    public  string NamePositionX { get; set; }
    public  string NamePositionY { get; set; }
    public  string NameSize { get; set; }

    public  string DateFont { get; set; }
    public  string DateBold { get; set; }
    public  string DateItalic { get; set; }
    public  string DateFontColor { get; set; }
    public  string DatePositionX { get; set; }
    public  string DatePositionY { get; set; }
    public  string DateSize { get; set; }
}

{"NameFont":null,"NameBold":null,"NameItalic":null,"NameFontColor":null,"NamePositionX":null,"NamePositionY":null,"NameSize":null,"DateFont":null,"DateBold":null,"DateItalic":null,"DateFontColor":null,"DatePositionX":null,"DatePositionY":null,"DateSize":null}