Firstly, you can print usermeta data by simply adding all subscription user IDs in to an array:
$user = get_all_user_id();
foreach ($user as $usr) {
echo $usr->user_login; // just type in here the metadata name you created
echo $usr->first_name;
echo $usr->last_name;
}
/my-account/subscriptions/
which page is it?