Example XML Request
<request>
<procedure>
<execute namespace="SharePoint2007Provider" procedure="RemoveGroupFromRole" impersonate="1">
<executeData>
<target>http://WSSFE:8080</target>
<siteGUID>a37333da-d677-4c4d-a172-a6141ac03873</siteGUID>
<subSiteGUID>8f33462b-4763-4ce8-b3b8-7930a1a51bce</subSiteGUID>
<roleName>Full Control</roleName>
<groupName>SPNSTestGroup</groupName>
</executeData>
</execute>
</procedure>
<context>
<securityContext>
<authentication>
<basic username="Fabrikam\Administrator" password="Pa$$word" />
</authentication>
</securityContext>
</context>
</request>