Get recommended BTC Fees

curl --request GET \
     --url https://sandboxapi.bitnob.co/api/v1/wallets/recommended-fees/btc \
     --header 'Authorization: Bearer API-KEY' \
     --header 'accept: application/json'

{
"status": true,
"message": "retrieve bitcoin recommended fees successful",
"data": {
  "fastestFee": 1,
  "halfHourFee": 1,
  "hourFee": 1,
  "minimumFee": 1
}
}