A forum topic » was pinned or unpinned.
updateChannelPinnedTopic#192efbe3 flags:# pinned:flags.0?true channel_id:long topic_id:int = Update;| Name | Type | Description |
|---|---|---|
| flags | # | Flags, see TL conditional fields |
| pinned | flags.0?true | Whether the topic was pinned or unpinned |
| channel_id | long | The forum ID |
| topic_id | int | The topic ID |
Telegram allows creating forums with multiple distinct topics.