JSON response doesn't contain the concrete stock data

[codeministry]

The stock data can be updated through the REST API endpoint, but the JSON response doesn't contain the concrete stock data.

The actual response:

"data": [
    40
]

The expected response:

{
  "data": {
    "id_stock_product": 583
    "quantity": 20,
    "is_never_out_of_stock": false,
    "stock_type": "Warehouse1"
  }
}