No Reponse header - Need Json

Your question may already have an answer on the community forum. Please search for related topics, and then read through the guidelines before creating a new topic.

Here’s an outline with best practices for making your inquiry.

My question:
How do I make my response header request display in JSON? Currently the 3rd party I am trying to connect to says that it is still returning text and when I look at the server I says I don’t have a header?

Details (like screenshots):

How I found the problem:

I’ve already tried:
Changing the setting to JSON