curl --request GET \
  --url https://production.trackstarhq.com/wms/orders/{order_id}/packs \
  --header 'x-trackstar-access-token: <x-trackstar-access-token>' \
  --header 'x-trackstar-api-key: <x-trackstar-api-key>'

{
  "data": {
    "packs": [
      {
        "pack_id": "package_id",
        "measurements": {
          "length": 1.5,
          "width": 1.5,
          "height": 1.5,
          "unit": "in",
          "weight": 2.5,
          "weight_unit": "lb"
        },
        "line_items": [
          {
            "inventory_item_id": "",
            "sku": "",
            "quantity": 0
          }
        ]
      }
    ],
    "carrier": "carrier_name",
    "shipping_method": "shipping_method_name",
    "ship_to_address": {
      "full_name": "John Doe",
      "company": "Company",
      "address1": "123 Main St",
      "address2": "Apt 2",
      "address3": "Floor 3",
      "city": "New York",
      "state": "NY",
      "postal_code": "10001",
      "country": "United States",
      "phone_number": "123-456-7890",
      "email_address": "johndoe@example.com"
    },
    "order_line_items": [
      {
        "product_id": "",
        "sku": "sku",
        "quantity": 1
      }
    ],
    "additional_fields": {
      "key": "value"
    }
  }
}