curl --request GET \
  --url https://{cluster}.voucherify.io/v1/segments/{segmentId} \
  --header 'X-App-Id: <api-key>' \
  --header 'X-App-Token: <api-key>'

{
  "id": "seg_Mv5w1b2FIEbiCCO5ioT8TfI2",
  "name": "Tiers 2 - Senior",
  "created_at": "2022-06-09T13:21:26.656Z",
  "type": "auto-update",
  "filter": {
    "junction": "and",
    "loyalty_points.campaigns.Tiers 2.points": {
      "conditions": {
        "$more_than_equal": [
          41
        ]
      }
    }
  },
  "initial_sync_status": "DONE",
  "object": "segment"
}

{
  "code": 404,
  "key": "not_found",
  "message": "Resource not found",
  "details": "Cannot find segment with id seg_Mv5w1b2FIEbiCCO5ioT8TfI",
  "request_id": "v-0b4d7a37a105797650",
  "resource_id": "seg_Mv5w1b2FIEbiCCO5ioT8TfI",
  "resource_type": "segment"
}