curl --request POST \
  --url https://sandbox.killb.app/api/v2/quotations/simulation \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "fromCurrency": "MXN",
  "toCurrency": "MXN",
  "amount": 123,
  "amountIsToCurrency": true,
  "cashInMethod": "SPEI",
  "cashOutMethod": "SPEI",
  "isFastPay": false
}
'

{
  "fromCurrency": "MXN",
  "toCurrency": "MXN",
  "fromAmount": 123,
  "toAmount": 123,
  "rate": 123,
  "cashInMethod": "SPEI",
  "cashOutMethod": "SPEI"
}