How to Reliably Detect Agent Disconnections with Laravel Reverb

I'm using Laravel Reverb as my WebSocket server, but my agents are custom Go clients (not Laravel Echo). I want to detect when an agent disconnects and mark it as offline, i use de MessageRecived event from reverb to work with al my events,listeners... like this:

<?php
// filepath: /app/Providers/RouteServiceProvider.php
public function boot(): void
{
    Event::listen(
        MessageReceived::class,
        HandlePrivateChannelEvents::class
    );

    Event::listen(
        ChannelCreated::class,
        HandleConnectionsReverb::class
    );
}

I also tried listening to ChannelRemoved, but when a connection is closed, I only see this log in the terminal:

Connection Closed ...........................................................................1923581.1251234

But I can't capture this as an event in my application code.

When I log the ChannelRemoved event, the channel property is sometimes just an empty array:

[2025-05-20 07:48:05] local.INFO: Received event {"event":{"Laravel\\Reverb\\Events\\ChannelRemoved":{"channel":[]}}},

How can I reliably detect agent disconnections and mark them as offline in Laravel when using Reverb with custom (non-Echo) clients? Is there a way to hook into the low-level connection close event or another recommended approach?

Thanks for all.