Synchronize Users and their custom profile fields in multisite network

Hi,

I was wondering how I can add users and custom profile fields including content to the main website and have them synchronized with the subsites.
This way users could also access their profile on any of the subsites and any adjustments made will synchronize with the other sites in the network.
The thing is that there is one user database in the whole network but custom user profiles are added manually per subsite. I just want that to be all the same network wide.

Hope someone can help me out on this.

How about this plugin: https://wordpress.org/plugins/multisite-user-management/ ?