PowerBI Oauth Token for data sets update

Hi,

I am trying to query data sets, reports, update data sets from POSTMAN with Authorization tokenstring, but getting 403 forbidden error. Here is my oAuth token request [I'm getting Bearer token for this request].

Url : https://login.windows.net/common/oauth2/token

client_secret: XXX

grant_type: client_credentials

client_secret: XXX

resource: https://analysis.windows.net/powerbi/api

Thanks & Regards