curl --request GET \
  --url https://api-next.ofauth.com/v2/access/promotions/:promotionId \
  --header 'apiKey: <api-key>' \
  --header 'x-connection-id: <api-key>'

{
  "id": 123,
  "message": "<string>",
  "rawMessage": "<string>",
  "hasRelatedPromo": true,
  "price": 123,
  "type": "<string>",
  "canClaim": true,
  "claimsCount": 123,
  "subscribeCounts": 123,
  "subscribeDays": 123,
  "createdAt": "<string>",
  "finishedAt": "<string>",
  "isFinished": true
}