How to display the properties of elements in a cycle through the Bitrix API?

Question

1C-Bitrix

Hello.
I need such structure.
Section -> Element -> Element properties.
I use the bitrix.catalog.section.list component.
Pulled the elements through result_modifier

<?
if (!defined("B_PROLOG_INCLUDED") || B_PROLOG_INCLUDED!==true) die();

$arSelect = Array("ID", "IBLOCK_ID", "NAME", "IBLOCK_SECTION_ID","PREVIEW_PICTURE","PROPERTY_*");
$arFilter = Array("IBLOCK_ID"=>$arParams["IBLOCK_ID"], "ACTIVE"=>"Y");
$res = CIBlockElement::GetList(Array("SORT"=>"DESK"), $arFilter, false, false, $arSelect);

while($ob = $res->GetNextElement())
{
  $arFields = $ob->GetFields();
  $arSec[$arFields["IBLOCK_SECTION_ID"]][] = $arFields;
  $arProps = $ob->GetProperties();

}

foreach ($arResult['SECTIONS'] as $key => $arSection){
  $arResult['SECTIONS'][$key]["ELEMENTS"] = $arSec[$arSection["ID"]];
}
?>

I can not understand how else to pull out the properties
Wrote like this

foreach ($arResult['SECTIONS'] as $key => $arSection){
  $arResult['SECTIONS'][$key]["ELEMENTS"] = $arSec[$arSection["ID"]];
        $arResult['SECTIONS'][$key]["ELEMENTS"]["PROPS"] = $arProps[$arResult['SECTIONS'][$key]["ELEMENTS"]["ID"]]

Displays only the properties of the first element of each section.
Help me please.