Thanks Davin,
I still have some trouble navigating the REST API, a bit of a newbie so forgive me if I'm heading the wrong direction with this. Even when I've signed in as the Portal Administrator/User Account that owns the items or have generated a token from the Server Administrator directory when trying to get to the user content json I want to take a look at, I still receive the following error message in my browser:
{"error":{"code":403,"messageCode":"GWM_0003","message":"You do not have permissions to access this resource or perform this operation.","details":[]}}
I understand I may need to generate a different token per this topic: Solved: "You do not have permissions to access this resour... - Esri Community but I'm not really using the same program to access the REST API, I'm just trying to navigate to it through my browser on the Virtual Machine that's hosting our Enterprise deployment. So I'm not entirely sure which token to generate where and where to put it.
I've used the portal token before at one point during our latest Enterprise upgrade but its been a while and I've lost some of the context.
Henry