liwo/app/Http/Resources/FileResource.php

<?php

namespace App\Http\Resources;

use Illuminate\Http\Resources\Json\JsonResource;

class FileResource extends JsonResource
{
    public function toArray($request)
    {
        $resource = [
            '_service' => 'user',
            '_resource' => 'files',
        ];

        foreach ($this->getAttributes() as $attribute => $value) {
            switch ($attribute) {
                case 'user_id':
                case 'business_id':
                case 'project_id':
                case 'disk':
                case 'original_name':
                case 'name':
                case 'extension':
                case 'mime':
                case 'size':
                case 'description':
                    $resource[$attribute] = $value;
                    break;
            }
        }

        return $resource;
    }
}