curl --request POST \
  --url https://api.example.com/vendor/fulfillment-sets/{id}/service-zones/{zone_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "geo_zones": [
    {
      "country_code": "<string>",
      "type": "country",
      "id": "<string>"
    }
  ]
}
'

{
  "fulfillment_set": {
    "id": "<string>",
    "name": "<string>",
    "type": "<string>",
    "location": {
      "id": "<string>",
      "name": "<string>",
      "fulfillment_sets": "<array>"
    },
    "service_zones": [
      {
        "id": "<string>",
        "name": "<string>",
        "fulfillment_set_id": "<string>",
        "fulfillment_set": "<unknown>",
        "geo_zones": [
          {
            "id": "<string>",
            "type": "country",
            "country_code": "<string>",
            "province_code": "<string>",
            "city": "<string>",
            "postal_expression": {},
            "created_at": "2023-11-07T05:31:56Z",
            "updated_at": "2023-11-07T05:31:56Z",
            "deleted_at": "2023-11-07T05:31:56Z"
          }
        ],
        "shipping_options": [
          {
            "id": "<string>",
            "name": "<string>",
            "price_type": "calculated",
            "service_zone_id": "<string>",
            "service_zone": "<unknown>",
            "shipping_option_type_id": "<string>",
            "type": {
              "id": "<string>",
              "created_at": "2023-11-07T05:31:56Z",
              "updated_at": "2023-11-07T05:31:56Z",
              "deleted_at": "2023-11-07T05:31:56Z",
              "label": "<string>",
              "description": "<string>",
              "code": "<string>",
              "shipping_option_id": "<string>"
            },
            "prices": [
              {
                "id": "<string>",
                "title": "<string>",
                "currency_code": "usd",
                "amount": 123,
                "created_at": "2023-11-07T05:31:56Z",
                "updated_at": "2023-11-07T05:31:56Z",
                "deleted_at": "2023-11-07T05:31:56Z"
              }
            ],
            "data": {},
            "metadata": {},
            "created_at": "2023-11-07T05:31:56Z",
            "updated_at": "2023-11-07T05:31:56Z",
            "deleted_at": "2023-11-07T05:31:56Z"
          }
        ],
        "created_at": "2023-11-07T05:31:56Z",
        "updated_at": "2023-11-07T05:31:56Z",
        "deleted_at": "2023-11-07T05:31:56Z"
      }
    ],
    "created_at": "2023-11-07T05:31:56Z",
    "updated_at": "2023-11-07T05:31:56Z",
    "deleted_at": "2023-11-07T05:31:56Z"
  }
}