curl --request POST \
  --url 'https://api.stateset.com/api/v1/shipping-zones' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "countries": [
    "string"
  ],
  "name": "string",
  "postal_codes": null,
  "priority": null,
  "regions": null
}'

{
  "countries": [
    "string"
  ],
  "created_at": "string",
  "id": "string",
  "is_active": true,
  "name": "string",
  "priority": 1
}