The bot's chat member status was updated in a chat. For private chats, this update is received only when the bot is blocked or unblocked by the user.
Date the change was done
The update's unique identifier. Update identifiers start from a certain positive number and increase sequentially. This ID becomes especially handy if you're using Webhooks, since it allows you to ignore repeated updates or to restore the correct update sequence, should they get out of order. If there are no new updates for at least a week, then identifier of the next update will be chosen randomly instead of sequentially.
The updated chat member
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