gistfile1.txt

...


//$entityName is the class name of your Entity
//$newObject is the data you got from JSON, should be same class as $entityName
function mapData(string $entityName, $newObject){

  // In findMyObject() create the query and enable result cache
  $existingObject = $this->em->getRepository($entityName)->findMyObject($newObject->getId());
  
  $propertyAccessor = PropertyAccess::createPropertyAccessor();
  foreach (get_object_vars($newObject) as $key => $value) {
      if ($propertyAccessor->isWritable($existingObject, $key)) {
          $propertyAccessor->setValue($existingObject, $key, $value);
      }
  }
  
}