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

{
  "list": [
    {
      "id": 123,
      "name": "<string>",
      "username": "<string>",
      "displayName": "<string>",
      "isVerified": true,
      "avatar": "<string>",
      "avatarThumbs": {
        "c50": "<string>",
        "c144": "<string>"
      },
      "lastSeen": "<string>",
      "subscription": {
        "isActive": true,
        "isExpired": true,
        "subscribedAt": "<string>",
        "expiresAt": "<string>",
        "renewedAt": "<string>",
        "price": 123,
        "regularPrice": 123,
        "discountPercent": 123,
        "discountPeriod": 123,
        "discountStartedAt": "<string>",
        "discountFinishedAt": "<string>",
        "history": [
          {
            "id": 123,
            "startDate": "<string>",
            "expireDate": "<string>",
            "price": 123,
            "regularPrice": 123,
            "discount": 123,
            "type": "<string>",
            "action": "<string>",
            "isCurrent": true
          }
        ]
      },
      "spending": {
        "total": 123,
        "tips": 123,
        "subscriptions": 123,
        "messages": 123,
        "posts": 123,
        "streams": 123
      },
      "isRestricted": true,
      "isBlocked": true,
      "capabilities": {
        "canRestrict": true,
        "canBlock": true,
        "canReport": true,
        "canUnsubscribe": true,
        "canReceiveMessages": true,
        "canSendTrial": true
      },
      "lists": [
        {
          "id": "<string>",
          "name": "<string>"
        }
      ]
    }
  ],
  "hasMore": true,
  "nextOffset": 123
}