I am getting 403 "Authentication required." when i hit the GraphQL query in Postman. I am able to execute the same query in Sitecore GraphQL Playground.
In postman, i am passing the URL as https://{domain}/sitecore/api/graph/items/master?sc_apikey=key value
Also, Tried with using basic authentication with user name and password since Sitecore is using IDS for authentication.
How to make the authentication successful via postman?