Making REST calls via VBA for BI Publisher Reports

Summary

I am trying to make REST calls via VBA for Reports but I do not know how to pass all of the parameters.

Content

I have been able to use VBA for updating Project Team Member Roles (GET, POST, & DELETE).  This works very well in Excel.

I would like to call Reports via VBA as well using the REST API.  I am able to do this in SOAPUI without any problems, but I don't know all of the code to call the Reports in VBA.  

The payload below is what I am using in SOAPUI:

<soap:Envelope xmlns:soap="