add class for subscriber

add_action('wp_footer',function (){
    if ( get_user_option( 'jpw_subscribe_status', get_current_user_id() ) === 'ACTIVE' ) {
        ?>
        <script>
            document.addEventListener("DOMContentLoaded", function () {
                document.body.classList.add('subscribed');
            });
        </script>
        <?php
    }
});