I'm trying to use th Power BI Rest API to create workspaces, i'm using POSTMAN to do this, i've already created an app in https://dev.powerbi.com/apps, i got the CLIENT ID, but i don't know how to auth on POSTMAN to execute requests like that:
POST https://api.powerbi.com/v1.0/myorg/groups
BODY { "name": "sample group" }
Can someone help me?