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:partTypeUpdated xmlns:ns="http://outerx.org/daisy/1.0";>
  <ns:oldPartType>
    <ns:partType name="NavigationDescription" mimeTypes="text/xml" 
daisyHtml="false" linkExtractor="navigation" deprecated="false" updateCount="2" 
id="1" lastModified="2005-10-05T09:27:34.000Z" lastModifier="123">
      <ns:labels>
        <ns:label locale="pl">Opis nawigacji</ns:label>
        <ns:label locale="de">Navigationsbeschreibung</ns:label>
        <ns:label locale="nl">Navigatiebeschrijving</ns:label>
        <ns:label locale="fr">Description de la navigation</ns:label>
        <ns:label locale="ru">Описание навигации</ns:label>
        <ns:label locale="">Navigation Description</ns:label>
      </ns:labels>
      <ns:descriptions/>
    </ns:partType>
  </ns:oldPartType>
  <ns:newPartType>
    <ns:partType name="NavigationDescription" mimeTypes="text/xml" 
daisyHtml="false" linkExtractor="navigation" deprecated="false" updateCount="3" 
id="1" lastModified="2006-03-03T14:59:16.653Z" lastModifier="123">
      <ns:labels>
        <ns:label locale="pl">Opis nawigacji</ns:label>
        <ns:label locale="de">Navigationsbeschreibung</ns:label>
        <ns:label locale="nl">Navigatiebeschrijving</ns:label>
        <ns:label locale="fr">Description de la navigation</ns:label>
        <ns:label locale="ru">Описание навигации</ns:label>
        <ns:label locale="">Navigation Description</ns:label>
      </ns:labels>
      <ns:descriptions/>
    </ns:partType>
  </ns:newPartType>
</ns:partTypeUpdated>