http://schemas.xmlsoap.org/ws/2005/02/trust/RST/Issue
http://www.w3.org/2005/08/addressing/anonymous
https://login.microsoftonline.com/extSTS.srf
{username}
{password}
{auth_url}
http://schemas.xmlsoap.org/ws/2005/05/identity/NoProofKey
http://schemas.xmlsoap.org/ws/2005/02/trust/Issue
urn:oasis:names:tc:SAML:1.0:assertion