Get accordion widget data back from Magento 2 through API

I am currently trying to get the product accordion data to return through a 'GET' API call, please see the attached image. There is two parts to this question, the first being I need to get the data that is held within the accordion to return through an API call, and the second is I will then need to update certain attributes within the product accordion again through an API call.

There are times when certain products will need the delivery block updating on the site and we are wanting to do this update through an API call, I have read the Magento documentation for API calls and am yet to find one that will enable you to get and update an accordion.

If anyone has had any experience with updating or retrieving information from an accordion through an API call, please advise how this can be done.

Magento 2 Accordion

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