private function fieldImage($key, $value, array $fields)
    {
        $before = Json::parse($value[0]);
        $after = Json::parse($value[1]);

        return [
            'type'   => $fields[$key]['type'],
            'before' => [
                'render' => [
                    'file'  => $before['file'],
                    'title' => $before['title'],
                ],
            ],
            'after'  => [
                'render' => [
                    'file'  => $after['file'],
                    'title' => $after['title'],
                ],
            ],
        ];
    }