How to filter information from a List View?

Summary

We are making a mobile app screen on VBCS and we want to filter the information from List View

Content

Hello guys!

I'm starting with VBCS and I'm working on a mobile app screen that will show the users all the POs and PRs that are pending approval for a specific user on an ERP instance. 

In order to do that, I'm consuming the Procurement Cloud  REST APIs (Get All Purchase Orders and Get all headers - Calling them as ADF Describe in the Service Connections) to get the POs and PRs, but these APIs get all the documents independent of the user and I couldn't find a way to create a filter for the service to bring only the documents that are pending approval for the user that is logged in (I believe that in this case is the user that is passed on the authentication on the webservice).