mint/api-v13/app/Http/Resources/CollectionListResource.php

<?php

namespace App\Http\Resources;

use Illuminate\Contracts\Support\Arrayable;
use Illuminate\Http\Request;
use Illuminate\Http\Resources\Json\JsonResource;

class CollectionListResource extends JsonResource
{
    /**
     * Transform the resource into an array.
     *
     * @param  Request  $request
     * @return array|Arrayable|\JsonSerializable
     */
    public function toArray($request)
    {
        return [
            'id' => $this->uid,
            'title' => $this->title,
        ];
    }
}