 href="https://ngrok.com/docs/api#api-event-subscriptions-create">https://ngrok.com/docs/api#api-event-subscriptions-create</a>.
</p></div><dl class="paramcmts block"><dt class="param">metadata</dt><dd class="cmt"><p>Arbitrary customer supplied information intended to 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><