<xml>
    <ToUserName><![CDATA[toUser]]></ToUserName>
    <FromUserName><![CDATA[sys]]></FromUserName>
    <CreateTime>1403610513</CreateTime>
    <MsgType><![CDATA[event]]></MsgType>
    <Event><![CDATA[change_school_contact]]></Event>
    <ChangeType><![CDATA[update_student]]></ChangeType>
    <Id><![CDATA[xiaoming]]></Id>
</xml>
