The formatting of a nice message for this event hasn't been implemented yet, so 
I'll just put an XML dump of the event here.

<ns:fieldTypeCreated xmlns:ns="http://outerx.org/daisy/1.0";>
  <ns:newFieldType>
    <ns:fieldType id="4" lastModifier="109" 
lastModified="2006-03-01T13:11:43.612Z" size="32" updateCount="1" 
multiValue="true" aclAllowed="false" deprecated="false" valueType="string" 
name="Tags">
      <ns:labels>
        <ns:label locale="en">Tags</ns:label>
        <ns:label locale="">Tags</ns:label>
      </ns:labels>
      <ns:descriptions>
        <ns:description locale="en">A set of tags used to categorise a 
document</ns:description>
        <ns:description locale="">A set of tags used to categorise a 
document</ns:description>
      </ns:descriptions>
    </ns:fieldType>
  </ns:newFieldType>
</ns:fieldTypeCreated>