How to map data from external API to new entity

I want to use best practice to map data from API to my entity.

My conditions are: external API response as array, and need to save it to my Magento entity, but response array have different key names, that my entity has.

So I create a hardcoded mapper like

   $data[] = [
        'cheque_id'       => $externalApiData['Id'],
        'cheque_date'     => $externalApiData['Date'],
        'bonus'           => $externalApiData['Bonuses'],
    ];

After that it’s easy to populate object by data using MagentoFrameworkApiDataObjectHelper::populateWithArray()

Maybe someone propose best solutions how to map it or give code example.