如果此人不可用，如何通过facebook-messenger API向我的API发送任何操作？

Question

When a user blocks my facebook bot account I can't handle any query about this action, but I need this information on my API. I try to write to an unavailable person from Facebook Page, but I just get an error "this person isn't available right now" in front and without query to my API

How I can handle, find and check unavailables users?

I thought to handle actions from chat on application's Facebook page (Mark as Done, Delete chat, etc), but I don't know how I can to get this on my API. Facebook actions

Answer 1

此类操作没有特定事件（用户阻止对话），因此您唯一的选择是处理人员无效的错误响应并在您的最终标记这些用户。