Postman
Configure Postman authorization using Bearer tokens per request or collection. Learn more in the official Postman documentation.
In Postman, you can set the authorization method and details either per request or collection.
You must use the Bearer token authorization type and specify an access token. You can fetch an access token in different ways. A possible way is using the .NET sample application described here.
Tip
You can learn more about about authentication in Postman from its official documentation. See Authorizing requests.