public function checkIfManuallyPicked($id)
    {
        global $wpdb;

        $result = $wpdb->get_results("
            SELECT *
            FROM $wpdb->postmeta
            WHERE meta_key = 'posts_data_posts'
                  AND meta_value LIKE '%\"{$id}\"%'
        ", OBJECT);

        if (count($result) === 0) {
            return false;
        }

        $posts = array();
        foreach ($result as $item) {
            $posts[] = $item->post_id;
        }

        return $posts;
    }