User-Provisioning only "memberof" info from Okta

Could you please advice regarding to SAML User Provisioning?

We are looking for best way to user-provisioning with Okta. We woud like to do SAML authnetication, but we would not like to upload to zScaler Cloud user-informationwhich can specified personal such as username, UPN, email address. We can allow uploading group-info (memberof) to zScaler Cloud. We hope to apply policy by group-info (memberof).

Are there way to provisioning only “memberof” from Okta?