Method: stories.sendReaction

Parameters:

Name	Type	Required
add_to_recent	Bool	Optional
user_id	Username, chat ID, Update, Message or InputUser	Optional
story_id	int	Yes
reaction	Reaction	Optional

Return type: Updates

Can bots use this method: YES

MadelineProto Example (now async for huge speed and parallelism!):

if (!file_exists('madeline.php')) {
    copy('https://phar.madelineproto.xyz/madeline.php', 'madeline.php');
}
include 'madeline.php';

$MadelineProto = new \danog\MadelineProto\API('session.madeline');
$MadelineProto->start();

$Updates = $MadelineProto->stories->sendReaction(add_to_recent: $Bool, user_id: $InputUser, story_id: $int, reaction: $Reaction, );