How to attach buttons to sendGame method in telegram bot API?

Question

PHP

I call https://api.telegram.org/bot_token/sendGame with parameters in POST:

$option = ['chat_id' => '12345689', 'game_short_name' => 'name_game'];

so everything works fine, he attaches the inline button "PLAY name_game" and sends a message with the game, but if I add the buttons myself, it doesn't work:

$keyboard = json_encode(["inline_keyboard" => [
            ,
            
        ]]);
$option = ['chat_id' => '12345689', 'game_short_name' => 'name_game', 'reply_markup' => $keyboard];

the answer comes: Bad Request: REPLY_MARKUP_GAME_EMPTY

* the inline_keyboard itself is compiled correctly and works fine with the SendMessage method, but it does not work with sendGame because there is a rule that the first button of sendGame should be the game button, and how to do it is not clear
* I will be glad to solve this questions in any language