curl --request GET \
  --url https://api.voucherify.io/v2/loyalties/programs/{id}/earning-rules \
  --header 'Authorization: Bearer <token>' \
  --header 'X-App-Id: <api-key>' \
  --header 'X-App-Token: <api-key>'

{
  "data": [
    {
      "earning_rule_id": "<string>",
      "created_at": "2023-11-07T05:31:56Z",
      "object": "<string>"
    }
  ],
  "cursor": {
    "next": "<string>",
    "expires_at": "2023-11-07T05:31:56Z"
  },
  "object": "<string>"
}