C#如何反序列化嵌套的json格式数据

Question

json格式如下： {"10000003":{"hall_id":"10000003","sys_point":"100000","xy_sys_point":"0"},"10000065":{"hall_id":"10000065","sys_point":"92162","xy_sys_point":"6275192","win_point":"5537000"}}我用的是JavaScriptSerializer js = new JavaScriptSerializer();方法，实体类已经建过，实体类为嵌套，只是不知道json数据的10000003 和10000065  该如何读取和写实体？请大家帮帮忙，谢谢了！