admin.dukany.io/app/Events/OrderNotification.php

<?php

namespace App\Events;

use Illuminate\Broadcasting\PrivateChannel;
use Illuminate\Queue\SerializesModels;
use Illuminate\Foundation\Events\Dispatchable;
use Illuminate\Broadcasting\InteractsWithSockets;
use Illuminate\Contracts\Broadcasting\ShouldBroadcast;

class OrderNotification implements ShouldBroadcast
{
    use Dispatchable, InteractsWithSockets, SerializesModels;

    public $resto_id;

    public $message;

    /**
     * Create a new event instance.
     *
     * @return void
     */
    public function __construct($resto_id)
    {
        $this->resto_id = $resto_id;
        $this->message  = "New Order is placed";
    }

    /**
     * Get the channels the event should broadcast on.
     *
     * @return Channel|array
     */
    public function broadcastOn()
    {
        return new PrivateChannel('meem-order-production');
    }
}