API return a mime (API connector)

I’m a bit confused, I’m working with an external API that returns this in JSON:

“name”: “document-00005.pdf”,
“size”: 9768,
“mime”: “application/pdf”,

I would like to see the PDF, does anyone have an idea?

where is the PDF stored?

In another web application…
I guess I have to regenerate the pdf with the content, but no idea how to do it.