curl --request GET \
  --url https://v2.firstpromoter.com/api/v2/company/promo_codes/{id} \
  --header 'Account-ID: <account-id>' \
  --header 'Authorization: Bearer <token>'

{
  "id": 123,
  "code": "<string>",
  "reward": {
    "id": 123,
    "name": "<string>"
  },
  "ext_id": "<string>",
  "description": "<string>",
  "company_id": 123,
  "promoter_campaign_id": 123,
  "metadata": {},
  "details": {},
  "archived_at": "2023-11-07T05:31:56Z"
}