Results are duplicated by column numbers

Hi, I am trying to build relatively complex query in raw format it looks as following

select * from `news` where (`Actual` = ?) and `IDFIRM` in (select id AS idfirm from `firm` where `Block` = ?)

I got this query from toSql() method output of query builder.

Here is my php code

NewsArticle::where($request->except(self::CITY_FILTER, self::NON_BLOCKED_COMPANIES))
                        ->whereIn(NewsArticle::FIELD_ID_FIRM, function ($query) use ($cityFilter, $onlyNonBlocked) {
                            $query->selectRaw('id AS idfirm')->from(Firm::TABLE_NAME)->where(Firm::FIELD_BLOCK, "=", $onlyNonBlocked);
                        })->get();

And if execute query directly to database it works correctly, but using laravel (lumen) I get following

  {
    "0": "0value",
    "1": "1value",
    "2": "2value",
    "3": "3value",
    "4": "4value",
    "5": "5value",
    "6": "6value",
    "ID": "0value",
    "IDFIRM": "1value",
    "Content": "2value",
    "Image": "3value",
    "Actual":4value,
    "DateBeginActual": "5value",
    "DateEndActual": "6value"
  }

Where is my fault.

Thanks