Global controller passing data to many different ViewModels

I'm in the process of attempting to convert a 4.x appliction to 5.x and I'm trying to figure out the right way to handle global data in the application.

In 4.x, my process was:

1. On application load, ajax call to the server to load user information

2. On user information load, fire a userLoaded event on the application

Code:

me.getApplication().fireEvent('userLoaded', data);

3. Several controllers listen to this 'userLoaded' event using Application Actions.

Code:

        application.on({
            userLoaded: {
                fn: this.onUserLoaded,
                scope: this
            }

I'm not sure the "right" way to do this in 5.x. So far I have

1. Top level Controller "User"

2. On init() on "Controller.User", make ajax call to get user information

How would I then populate the data I get back from this ajax call into different ViewModels that are dependent on this information?

For example, I'm binding the name to my MainViewModel which has the ViewPort

Code:

Ext.define('MyApp.view.main.MainViewModel', {
    extend: 'Ext.app.ViewModel',
    alias: 'viewmodel.mainmain',


    data: {
        name: 'Needs To Be Bind Value For Name Returned From User Load'
    }


});

In architect, I've attempted to add a Application Action to the respective ViewController, but nothing happens. Is there a better way of handling this scenario?

Thanks in advance.

Global controller passing data to many different ViewModels