<dataxml xmlns="http://server.com/getxml">
    <Id>145</Id>
    <Email>test@xml.ru<;/Email>
    <Ss>
	<Schema Namespace="My">
	        <Type Name="adress">
	          <Code>
	            <Token Name="Token_Id" />
	          </Code>
	        </Type>
	</Schema>
    </Ss>
</dataxml>

[ServiceContract(Namespace = "http://server.com/getxml")]
    public interface Ixml
    {
        [OperationContract]
        [WebInvoke(Method = "POST", UriTemplate = "getxml",
               RequestFormat = WebMessageFormat.Xml,
               ResponseFormat = WebMessageFormat.Xml,
               BodyStyle = WebMessageBodyStyle.Bare)]
        string getxml(dataxml Data);
    }

    [DataContract(Namespace = "http://server.com/getxml")]
    public class dataxml
    {
        [DataMember]
        public string Id
            {
                get;
                set;
            }

        [DataMember]
        public string Email
            {
                get;
                set;
            }

        [DataMember(Name = "Ss")]
        [XmlElement(Form = XmlSchemaForm.Unqualified)]
        public string Ss
            {
                get;
                set;
            } 
    }

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