IDM 4.5 AE

I want to post some data to a https URL with content type "Content-Type: application/x-www-form-urlencoded" with some data, using NetIQ SOAP driver. The post data is not a puerly "SOAP" data, but I want to use NetIQ SOAP driver to do this
avoiding writing own code,

what i find in documentation is to use operation-data to override SOAP driver behavior,

This is what i am generating to shim

<nds dtdversion="4.0">
<product version="">Identity Manager</product>
<contact>NetIQ Corporation</contact>
<operation-data command="token-refresh" url="https://developer-do-crazy-token-endpoints-implementations-omg"/>
<driver-operation-data command="token-refresh">
<request-headers remove-existing="true">
<request-header name="Content-Type">application/x-www-form-urlencoded</request-header>
<request-header name="Accept">application/json</request-header>
<request-header name="X-Requested-By">AppD</request-header>

But how to add Body to this operation-data with some content ?