curl --request POST \
  --url https://api.example.com/api/v1/open/device-requests/{request_id}/reply \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Id: <x-api-id>' \
  --header 'X-Api-Nonce: <x-api-nonce>' \
  --header 'X-Api-Signature: <api-key>' \
  --header 'X-Api-Timestamp: <x-api-timestamp>' \
  --data '
{
  "reply_code": "APPROVED",
  "reply_message": "approved",
  "payload": {
    "config_result": "ok"
  }
}
'

{
  "request_id": "devreq-001",
  "reply_code": "APPROVED",
  "reply_message": "approved",
  "reply_source": "OPEN_PLATFORM",
  "replied_at": "2026-04-22T12:01:00Z"
}