How to use web service data set response in RTF file in BI Report

Dears,

We are using web service data set in Data model and it is returning the below response.

Web Service response from Web service data sets:

<?xml version = '1.0' encoding = 'utf-8'?>

<!--Generated by Oracle Analytics Publisher -Dataengine, datamodel:_Custom_IMAGE_UCM_IMAGE_DM_2_xdm -->

<ns0:getContractDocumentFileContentsResponse xmlns:ns0="http://xmlns.oracle.com/apps/contracts/coreAuthoring/contractService/types/">

   <result xmlns="http://xmlns.oracle.com/apps/contracts/coreAuthoring/contractService/types/">NHC Master Plan.png</result>

   <result xmlns="http://xmlns.oracle.com/apps/contracts/coreAuthoring/contractService/types/">image/png</result>

   <result xmlns="http://xmlns.oracle.com/apps/contracts/coreAuthoring/contractService/types/">iVBORw0KGgoAAAANSUhEUgAAAu8AAAIYCAYAAADdFALwAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAAFxEAABcRAcom8z8AAP+lSURBVHhe7L0FoF7FubbNII=</result>