So this is an extension of this question
Magento 2.3 display logged in/out message using private content
Default behavior is that
data-bind="scope: 'customer' has a few properties
data_id: 1234567890 firstname: "Dominic" fullname: "Dominic Xigen" websiteId: "1"
I’m looking for an example on how to pass other or custom customer attributes to knockout.