https://developers.weixin.qq.com/doc/offiaccount/Message_Management/Service_Center_messages.html

文档里说只有 click，scancode_push, scancode_waitmsg 会触发客服接口，但实际测试结果是：view, pic_sysphoto, pic_photo_or_album, pic_weixin, location_select, media_id, view_limited 都可以触发，希望能确认下。

自定义菜单的链接 https://developers.weixin.qq.com/doc/offiaccount/Custom_Menus/Creating_Custom-Defined_Menu.html