accounts/api/config/routes.php

<?php
return [
    '/accounts/change-email/initialize' => 'accounts/change-email-initialize',
    '/accounts/change-email/submit-new-email' => 'accounts/change-email-submit-new-email',
    '/accounts/change-email/confirm-new-email' => 'accounts/change-email-confirm-new-email',
];