urlsnail/app/Console/Commands/ImportBookmarks.php

<?php

namespace App\Console\Commands;

use App\Jobs\ImportBookmark;
use Illuminate\Console\Command;
use RuntimeException;

class ImportBookmarks extends Command
{
    static $perBatch = 100;

    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'app:import-bookmarks {json_file}';

    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'Command description';

    /**
     * Execute the console command.
     */
    public function handle()
    {
        $json_file_path = $this->argument('json_file');
        if (!file_exists($json_file_path)) {
            throw new RuntimeException('Unable to find JSON file');
        }

        $json = file_get_contents($json_file_path);
        $bookmarks = json_decode($json, true);

        foreach (array_chunk($bookmarks, self::$perBatch) as $bookmarks_json) {
            ImportBookmark::dispatch(...$bookmarks_json);
        }
    }
}