curl --request PUT \
  --url http://localhost/api/v3/customProducts/{customProduct} \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "description": "<string>",
  "barcode": "<string>",
  "sku": "<string>",
  "url": "<string>",
  "price": 123,
  "currency": "<string>",
  "image_url": "<string>",
  "product_id": 123
}
'

{
  "data": {
    "id": 123,
    "name": "<string>",
    "description": "<string>",
    "barcode": "<string>",
    "sku": "<string>",
    "url": "<string>",
    "price": "<string>",
    "currency": "<string>",
    "image_url": "<string>",
    "product_id": "<string>",
    "created_at": "<string>",
    "updated_at": "<string>"
  }
}