liwo/app/Listeners/BusinessUpdateListener.php

<?php

namespace App\Listeners;

use App\Models\User;
use App\Models\Business;
use Illuminate\Support\Arr;
use App\Events\BusinessUpdate;
use App\Events\BusinessUserCreate;
use App\Notifications\DBNotification;
use App\Notifications\MailNotification;
use Illuminate\Queue\InteractsWithQueue;

use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Support\Facades\Notification;

class BusinessUpdateListener
{
    public function handle(BusinessUpdate $event)
    {
        $payload = $event->message;

        $wallet = $payload?->data?->diff?->wallet;
        $owners = Business::findOrFail($payload->business)->owners;
        $message = ['body' => 'Test'];

        if ($wallet < 0) {
            Notification::send($owners, new MailNotification($message));
            Notification::send($owners, new DBNotification($message));
        }
    }
}