invoiceninja/app/Events/UserSettingsChanged.php

<?php namespace App\Events;

use App\Models\User;
use Illuminate\Queue\SerializesModels;

class UserSettingsChanged extends Event
{
    use SerializesModels;

    /**
     * @var User
     */
    public $user;

    /**
     * Create a new event instance.
     *
     * @param User $user
     */
    public function __construct(User $user = null)
    {
        $this->user = $user;
    }
}