I should have also mentioned I need it to be formatted into a normal variable, it'll be implemented like this:
<script>
window.intercomSettings = {
app_id: "app_id",
phone: "<?php echo $verify_phone; ?>",
name: "<?php echo $this->Html->_($contact->first_name, true) . ' ' . $this->Html->_($contact->last_name, true);?>",
email: "<?php echo $verify_email; ?>", // Email address
user_hash: "<?php echo $email_sig; ?>" // HMAC using SHA-256
};
</script>