используем вот такой код;
client = Savon.client(ssl_verify_mode: :none,
proxy: "http://127.0.0.1:8888",
endpoint: "https://dev.cleverdome.com/CDSSOService/SSOService.svc/SSO",
namespace: "'http://tempuri.org/",
env_namespace: :soapenv, )
client.call(:UserPort,
soap_action: 'urn:up-us:sso-service:service:v1/ISSOService/GetSSO',
xml:'<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<soapenv:Body>
<AuthnRequest xmlns="urn:oasis:names:tc:SAML:2.0:protocol" ID="_88ce91a2-1030-4a24-b347-ea522eacc1b8" ForceAuthn="false" IsPassive="false" IssueInstant="2015-04-24T15:25:49.497Z" ProtocolBinding="urn:oasis:names:tc:SAML:2.0:bindings:SOAP" ProviderName="Betterment" Version="2.0">
<ns1:Issuer xmlns:ns1="urn:oasis:names:tc:SAML:2.0:assertion" Format="urn:oasis:names:tc:SAML:2.0:nameidformat:transient">Betterment</ns1:Issuer>
<ns2:Signature xmlns:ns2="http://www.w3.org/2000/09/xmldsig#">
<ns2:SignedInfo>
