You can try "RemoteUserStoreManagerService" for your purpose.
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ser="http://service.ws.um.carbon.wso2.org">
<soapenv:Header/>
<soapenv:Body>
<ser:getUserClaimValues>
<ser:userName>admin</ser:userName>
</ser:getUserClaimValues>
</soapenv:Body>
</soapenv:Envelope>
Above request will return you the claims of admin user of its default profile.
EDIT
As per the comment you need the WSDL of new admin service.
By default WSDLs of admin services are hidden. To change that behavior open <IS_HOME>/repository/conf/carbon.xml
then locate HideAdminServiceWSDLs
tag and set it to false
.
Then you can view WSDL of any admin service from the url
https://localhost:9443/services/<SERVICE_NAME>?wsdl
In this case
https://localhost:9443/services/RemoteUserStoreManagerService?wsdl
HTH,
DarRay,