Hello Santosh,
Could you please share the IDM UI screenshots so that we can get little more idea about your error.idm_authenticated_studio action
In general, If a user has been created in UME as well as in Identity store with the proper roles and privileges then it should have access to manage tab.
Please check whether user has "MX_PRIV:WD:TAB_MANAGE" privilege or not. This privilege provide access to manage tab.
Regards,
C Kumar
