j.rb

  def call(credentials)
    header_info = get_oauth_token(credentials)
    namespaces = {"xmlns:ns0" => "https://...", "xmlns:ns1 = />" => "http://...",}
    client = Savon.client(wsdl: '../....wsdl',
                          endpoint: 'https://...',
                          # convert_request_keys_to: :camelcase,
                          namespaces: namespaces,
                          headers: {
                            "Authorization" => header_info[:token],
                            "csn" => "...",
                            "timestamp" => header_info[:timestamp],
                            "signature" => header_info[:signature],
                            "content-type" => "application/xml"
                          })

    client.call(:match_account_contact, message: {
                  "xmlns:ns0:..." => {
                    "xmlns:ns1 = :.../>" => "...",
                    "xmlns:ns1 = :.../>" => "...",
                    "xmlns:ns1 = :.../>" => "..."
                  },
                  "xmlns:ns0:RequestContext" => {
                    "xmlns:ns0:..." => "...",
                    "xmlns:ns0:..." => "..."
                    "xmlns:ns0:..." => "...",
                    "xmlns:ns0:..." => "...",
                    "xmlns:ns0:..." => "...",
                    "xmlns:ns0:..." => "..."
                  },
                  "xmlns:ns0:..." => {
                    "xmlns:ns0:..." => "...",
                    "xmlns:ns0:..." => "...",

                    "xmlns:ns0:..." => {
                      "xmlns:ns0:..." => "...",
                      "xmlns:ns0:..." => "  ",
                      "xmlns:ns0:..." => "...",
                      "xmlns:ns0:..." => "...",
                      "xmlns:ns0:..." => " ",
                      "xmlns:ns0:..." => "...",
                      "xmlns:ns0:..." => "...",
                      "xmlns:ns0:..." => " ",
                      "xmlns:ns0:..." => "...",
                      "xmlns:ns0:..." => "..."
                    },
                    "xmlns:ns0:..." =>
                  },
                  "xmlns:ns0:..." => {
                  "xmlns:ns0:..." => "...",
                    "xmlns:ns0:..." => "...",
                    "xmlns:ns0:..." => "..."
                  }
                })
  end