So I've been trying to create a template that will create a list of user names (only subscribers), their email address, and web address and I'm having no luck. I've been using the following code but still nothing is showing up.

<?php
        $args = array();
        $args[0] = 'user_firstname';
        $args[1] = 'user_lastname';
        $args[2] = 'user_email';
        $args[3] = 'user_url';?>
        <?php $wp_user_search = new WP_User_Query( array( 'role' => 'subscriber', 'fields' => $args ) ); ?>
        <?php $subscribers = $wp_user_search->get_results(); ?>

any help would be appreciated.
Thanks in advance