https://developers.weixin.qq.com/doc/offiaccount/Shopping_Guide/guide-account/shopping-guide.onGuideCreateQrCode.html

 <xml>

    <ToUserName><![CDATA[gh_e250d66277d6]]></ToUserName>

    <FromUserName><![CDATA[oEw0-0oGY9JMELQ97iVvOmh43Ab0]]></FromUserName>

    <CreateTime>1587394183</CreateTime>

    <MsgType><![CDATA[event]]></MsgType>

    <Event><![CDATA[guide_qrcode_scan_event]]></Event>

    <GuideScanEvent>

        <qrcode_guide_account><![CDATA[czx062]]></qrcode_guide_account>

        <openid><![CDATA[oEw0-0odC5MuL5OtiHQ5iknXkoX4]]></openid>

        <action>2</action>

        <qrcode_info><![CDATA[]]></qrcode_info>

        <qrcode_guide_openid><![CDATA[default]]></qrcode_guide_openid>

    </GuideScanEvent>

    <Encrypt><![CDATA[Fbp5N6IX4xyJVm9u9vZGDkhRpMUjI2CsdKrsIiUQ1l4CEg0w+sttemZtzxI28exhlYeLDwXtvG16+GlCaVZEmPyKTFf1j/GwEOJnbRev6tvFj2Ei9ooJBaG53V0sCvb9oiFS+cFbXyhk1ya4EmAml5REjVxbNSOXWK91vdfOnhHUGIznAeOoFsjuFaJQdfNAfSIjjwV7QsqkVrBWmCbX5NZqyDACtgG59e/9IgTUDRO+MdtRBEH31d5nYl8ZSogk111C13cM4f97fSKTkFw87TWBsMRSsgQs6k1hyWdLHw/W/HeQkYmpcvu32Z2xtFRDOVVMs8O6FdfKYG/PQ5sB8vq1ZQ4mdpD1cSPx/yiqJzZeZ+ZT4xdk5dPtZXdXGmp254vSIVdN38jFtHZ2hSwUaTE1qGIYGuzbKY7JE3cgNQgDC3hNhQ4r/m4U1kYM1Xj4Rwka+I4XBDx1FlxBe5OTH5LZMbOuaXk1lSfIP5GgigCThr6t6Deyd/PGbpyV3o2jindvSDcmWJGKSyhzxIPh7ZvBEtPBWS2lB26NwmL/y+I7MLLbAzwCARsGPdhsyFvFAItVaQGdNF307VfnmJ+I6KaMOfpPJXxxR2EDQKnyxQ2/H44vqh59as+zh3xdi7DoXuo58i+3bnwG/Yv+R/TC/rCypnPH7QEtHZiTktQhb3XHn+OnAAiE/9zu97el1wzmRFXxLQzaz4peXKGxy+dnLmBvyd6cNSkXHchNu9G7M7o0h89t5eA2DaNjb3jQ4Ikp]]></Encrypt>

</xml>

扫码事件返回报文如上，导购openid字段qrcode_guide_openid返回值为defaut，不是导购真实openid。