<constant type="character">N</constant>
<data type="character" constant_length="3">
    <update state="PacketNumber" type="string"/>
</data>
<root_object name="none" matches_required="at_least_one" format="json">
    <values path="//name" matches_required="none">
        <update state="groupName" type="string"></update>
    </values>
</root_object>