be machine readable. Optional, max 4096 chars.</p></dd><dt class="param">description</dt><dd class="cmt"><p>Arbitrary customer supplied information intended to be human readable. Optional, max 255 chars.</p></dd><dt class="param">sources</dt><dd class="cmt"><p>Sources containing the types for which this event subscription will trigger</p></dd><dt class="param">destinationIds</dt><dd class="cmt"><p>A list of Event Destination IDs which should be used for this Event Subscription.</p></dd><dt>returns</dt><dd c