Build a CMS for my MongoDB Backend

I have migrated the backend for my mobile app off of Parse onto Heroku and MongoLabs (mLab). I need a CMS to interact with the database and add items to it through a web portal. There is the following that needs to be done: Post requests of 3 different item types each with a JSON body. User authentication, so nobody can go in there and mess things up. 2 admin levels - Super admin who can add/delete other admins and add/edit items. Admin can only add/edit items. Work must be done in Node.JS, Angular and Express. App will sit separately from the current mobile backend application (which is a Parse backend) and talk directly with the DB.