curl -i -X POST \
  https://stallionexpress.redocly.app/_mock/stallionexpress-v4/shipments \
  -H 'Authorization: Bearer <YOUR_TOKEN_HERE>' \
  -H 'Content-Type: application/json' \
  -H 'Idempotency-Key: string' \
  -d '{
    "to_address": {
      "name": "Pramod Thomson",
      "company": "string",
      "address1": "30 Clearview Dr",
      "address2": "string",
      "city": "Rock Springs",
      "province_code": "WY",
      "postal_code": "82901",
      "country_code": "US",
      "phone": "string",
      "email": "string",
      "is_residential": true
    },
    "return_address": {
      "name": "Pramod Thomson",
      "company": "string",
      "address1": "30 Clearview Dr",
      "address2": "string",
      "city": "Rock Springs",
      "province_code": "WY",
      "postal_code": "82901",
      "country_code": "US",
      "phone": "string",
      "email": "string",
      "is_residential": true
    },
    "is_return": false,
    "weight_unit": "lbs",
    "weight": 0.6,
    "length": 9,
    "width": 12,
    "height": 1,
    "size_unit": "cm",
    "items": [
      {
        "description": "Two pair of socks",
        "sku": "SKU123",
        "quantity": 2,
        "value": 10,
        "currency": "CAD",
        "country_of_origin": "CN",
        "hs_code": "123456",
        "manufacturer_name": "Acme Clothing Inc.",
        "manufacturer_address1": "123 Manufacturing Blvd",
        "manufacturer_city": "Toronto",
        "manufacturer_province_code": "ON",
        "manufacturer_postal_code": "M5V 2H1",
        "manufacturer_country_code": "CA"
      }
    ],
    "package_type": "Parcel",
    "signature_confirmation": false,
    "postage_type": "USPS First Class Mail",
    "label_format": "pdf",
    "is_fba": false,
    "is_draft": false,
    "insured": true,
    "region": null,
    "tax_identifier": {
      "tax_type": "IOSS",
      "number": "IM1234567890",
      "issuing_authority": "GB"
    }
  }'