POST http://localhost:8090/card
content-type: application/json

[
  {
    "product_id": 1,
    "count": 7
  }
]

###

POST http://localhost:8090/orders
content-type: application/json

{
  "name": "Иванов Иван",
  "phone": "+7-000-000-00-00",
  "items": [
    {
      "product_id": 1,
      "count": 7
    }
  ]
}