<?xml version=""1.0"" encoding=""utf-8""?>
<soap12:Envelope xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance""
                              xmlns:xsd=""http://www.w3.org/2001/XMLSchema"" 
                                xmlns:soap12=""http://www.w3.org/2003/05/soap-envelope"">
                                <soap12:Body>
                                <HelloWorld2 xmlns=""http://tempuri.org/"">
                                <text>тестовое сообщение</text>
                                </HelloWorld2>
                                </soap12:Body>
                                </soap12:Envelope>