      &quot;messageType&quot;: &quot;Publish&quot;,
        &quot;id&quot;: {{String}},
        &quot;messageDescription&quot;: {
            &quot;topic&quot;: &quot;CaptionPresenter&quot;,
            &quot;action&quot;: &quot;SetCaption&quot;
        }
    },
    &quot;payload&quot;: {
        &quot;caption&quot;: {{String}}        
    }
}
</code></pre></div>
<h4 id="payload">Payload<a class="headerlink" href="#payload" title="Permanent link">&para;</a></h4>
<table>
<thead>
<tr>
<th>Property</th>
<th>Ty