Authentication flow to use conversation API

[csteel-229021]

Hello all, I am developing an application to automate bias testing applications like this by comparing actual and expected responses from the model grounded in my own data. For reference, I have deployed this application as a web app with all the services integrated with private endpoints behind our VNET. Testing this application in Postman though, I keep running into a 403 forbidden error. Is it possible to authenticate and access the main APIs for this application (/conversation, /.auth/me) in a third party app?