What are different headers to use at POSTMAN to test API

I am unable to get beautify JSON file using Postman test. Do i need to use any different headers

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permid-api

What's Open PermID API you are using? Please share the request message.

From my test, the JSON response looks okay.

What's Open PermID API you are using? Please share the request message.

From my test, the JSON response looks okay.