curl --request POST \
  --url https://{cluster}.voucherify.io/v1/customers/{customerId}/permanent-deletion \
  --header 'Authorization: Bearer <token>' \
  --header 'X-App-Id: <api-key>' \
  --header 'X-App-Token: <api-key>'

{
  "id": "del_7k3buMvBsJuXiLRmdh1WZvZs",
  "created_at": "2022-09-02T17:50:29.302Z",
  "related_object_id": "cust_XI8sPLvznzVpNI1BMIWGcUJa",
  "related_object": "customer",
  "status": "DONE",
  "data_json": {
    "events": 16,
    "customer_events": 28,
    "daily_events": 0,
    "segments": 0,
    "orders": 9,
    "order_events": 5,
    "customer": 1
  },
  "object": "pernament_deletion"
}