<saml:SubjectConfirmationData xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion" NotBefore="2001-04-19T04:25:21Z" NotOnOrAfter="2009-02-13T23:31:30Z" Recipient="https://simplesamlphp.org/sp/metadata" InResponseTo="SomeRequestID" Address="127.0.0.1" test:attr1="testval1" test:attr2="testval2" xmlns:test="urn:test:something">
  <ds:KeyInfo xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
    <ds:KeyName>SomeKey</ds:KeyName>
  </ds:KeyInfo>
  <some>Arbitrary Element</some>
</saml:SubjectConfirmationData>
