Adding Json To Order Notification Emails

We're trying to add the trust pilot rich snippets to our order notifications.

in the email template editor I've entered the code:

This almost works. But when I send a test notification and look at the source code of the email I see the following:

Notice that it replaces the plus sign in the script type with an html special character. I believe this is causing it not to work properly.

Does anyone know any way I can prevent this from happening?