How to add Javascript in a field?

Hi,

I’m trying to add a field that includes <script>, I’m using textarea type.

This is how the script start (it is rich schema snippet):

<script type="application/ld+json">
{
  "@context": "https://schema.org/", 
  "@type": "HowTo", 

When Saving the post (the field is for posts), the “<script>” tag is removed so the field is not valid.

Appreciate your help.

Thanks