curl --request GET \
  --url https://{operatorDomain}/v1/admin/finance/bookings/{bookingId}/guarantees \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": "grnt_01HZX...",
      "bookingId": "<string>",
      "amountCents": 50000,
      "currency": "EUR",
      "kind": "deposit",
      "status": "pending"
    }
  ]
}