With the Structured Data Testing Tool, some websites have structured data like below.

<!-- Inserted by https://****.com/js/chunk-vendors.js -->
<script type="application/ld+json">{"@context":"https://schema.org","@type"****}</script>

The above structured data does not exist in the page source displayed by the browser. However, Structured Data Testing Tool can find this data.

I whould like to access this structured data with Xpath etc. How can I get the data?