curl --request GET \
  --url https://api.satsuma.ai/cart/{id}/item \
  --header 'Authorization: <api-key>'

{
  "data": [
    {
      "id": "<string>",
      "cart_id": "<string>",
      "product_id": "<string>",
      "product_name": "<string>",
      "quantity": 123,
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z"
    }
  ],
  "messages": [
    {
      "context": "<string>",
      "level": "Information",
      "text": "<string>",
      "data": {}
    }
  ]
}