<soapenv:Header>

<oas:Security xmlns:oas="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd"
  xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
  <oas:UsernameToken>
    <oas:Username><%= username %></oas:Username>
    <oas:Password Type="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-tokenprofile-1.0#PasswordDigest"><%= password_digest %></oas:Password>
    <oas:Nonce EncodingType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary"><%= encoded_nonce %></oas:Nonce>
    <wsu:Created><%= creation_date %></wsu:Created>
  </oas:UsernameToken>
 </oas:Security>

</soapenv:Header>