curl --request POST \
  --url https://production.trackstarhq.com/cart/orders/{order_id}/shipments \
  --header 'Content-Type: application/json' \
  --header 'x-trackstar-access-token: <x-trackstar-access-token>' \
  --header 'x-trackstar-api-key: <x-trackstar-api-key>' \
  --data '{
  "tracking_number": "",
  "tracking_url": "https://www.example.com/tracking",
  "carrier_name": "Carrier Name",
  "requested_shipping_method": "Standard"
}'

{
  "data": {
    "id": "order_id",
    "order_number": "order_number",
    "created_date": "2022-01-01T00:00:00Z",
    "updated_date": "2022-01-02T05:05:05Z",
    "status": "fulfilled",
    "raw_status": "raw_status",
    "requested_shipping_method": "Standard",
    "shipping_method_id": "shipping_method_id",
    "shipping_method_name": "Standard Shipping",
    "carrier_id": "carrier_id",
    "carrier_name": "Carrier Name",
    "invoice_currency_code": "USD",
    "total_price": 13.49,
    "total_tax": 1.5,
    "total_discount": 2.5,
    "total_shipping": 3.5,
    "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"
    },
    "bill_to_address": {
      "full_name": "John Doe",
      "address1": "123 Main St",
      "address2": "Apt 2",
      "address3": "Floor 3",
      "city": "New York",
      "state": "NY",
      "postal_code": "10001",
      "country": "United States"
    },
    "earliest_ship_date": "2022-10-10T01:02:03Z",
    "latest_ship_date": "2022-10-10T01:02:03Z",
    "line_items": [
      {
        "line_item_id": "line_item_id",
        "product_id": "",
        "product_sku": "",
        "parent_product_id": "",
        "parent_product_sku": "",
        "quantity": 1,
        "unit_price": 10.99,
        "discount": 1.5,
        "tax": 0.5
      }
    ],
    "shipping_groups": [
      {
        "shipping_group_id": "shipping_group_id",
        "created_date": "2022-01-01T00:00:00Z",
        "updated_date": "2022-01-02T05:05:05Z",
        "raw_status": "raw_status",
        "status": "shipped",
        "warehouse_id": "warehouse_id",
        "line_items": [
          {
            "line_item_id": "shipping_group_line_item_id",
            "product_id": "",
            "product_sku": "",
            "parent_product_id": "",
            "quantity": 0
          }
        ]
      }
    ],
    "shipments": [
      {
        "shipment_id": "shipment_id",
        "raw_status": "raw_status",
        "status": "shipped",
        "warehouse_id": "warehouse_id",
        "shipping_method_id": "shipment_shipping_method_id",
        "shipping_method_name": "shipment_shipping_method_name",
        "carrier_id": "carrier_id",
        "carrier_name": "carrier_name",
        "tracking_number": "",
        "tracking_url": "https://www.example.com/tracking",
        "line_items": [
          {
            "shipment_line_item_id": "",
            "product_id": "",
            "product_sku": "",
            "parent_product_id": "",
            "parent_product_sku": "",
            "quantity": 0
          }
        ],
        "shipping_groups": [
          "sg_id_1",
          "sg_id_2"
        ],
        "created_date": "2022-01-01T00:00:00Z",
        "updated_date": "2022-01-02T05:05:05Z"
      }
    ],
    "external_system_url": "https://example.com/order/123",
    "additional_fields": {
      "key": "value"
    }
  },
  "id": "id",
  "unused_fields": [
    ""
  ]
}