curl --request POST \
  --url https://payouts.api.trykarat.com/events/subscription \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "event_name": "payout.updated",
  "callback_url": "https://example.com/api/webhooks/callback"
}
'

{
  "data": {
    "subscription": {
      "id": "50fe99c8-6412-4557-91c8-c9d112dadbc7",
      "eventName": "payout.updated",
      "callbackUrl": "https://example.com/api/webhooks/callback",
      "createdAt": "2026-03-03T21:17:52.77594+00:00"
    },
    "secret": "example_secret"
  }
}