ReactToChannelMessage

Add or remove the user’s own emoji reaction on a channel message or thread reply. The reaction is shown as coming from the user. Find message ids with ReadChannelMessages or ReadChannelThread. Use only when the user asks to react to a message.

Parameters

Parameter	Type	Required	Description
`channelId`	string	Yes	Channel id containing the message.
`messageId`	string	Yes	Id of the message to react to.
`emoji`	string	Yes	The emoji itself as a Unicode character, for example 👍 or 🎉 — not a shortcode like :thumbsup:.
`action`	`"add"` \| `"remove"`	No	Whether to add or remove a reaction.