baoshi-was/app/Notifications/SendEmailNotification.php

<?php

namespace App\Notifications;

use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Notifications\Messages\MailMessage;
use Illuminate\Notifications\Notification;

class SendEmailNotification extends Notification implements ShouldQueue
{
    use Queueable;

    public $objToJson;

    /**
     * SendEmailNotification constructor.
     * @param $objToJson
     */
    public function __construct($objToJson)
    {
        $this->objToJson = $objToJson;
    }


    /**
     * Get the notification's delivery channels.
     *
     * @param  mixed  $notifiable
     * @return array
     */
    public function via($notifiable): array
    {
        return ['mail'];
    }

    /**
     * Get the mail representation of the notification.
     *
     * @param  mixed  $notifiable
     * @return MailMessage
     */
    public function toMail($notifiable): MailMessage
    {
        $template = json_decode($this->objToJson);
        return (new MailMessage)->view(
            'emails.test', ['objToJson' => $template]
        )->subject($template->title);
    }

    /**
     * Get the array representation of the notification.
     *
     * @param  mixed  $notifiable
     * @return array
     */
    public function toArray($notifiable)
    {
        return [
            //
        ];
    }
}