I am using the API at https://api.fireblocks.io/v1/estimate_network_fee to estimate fees for DOT/WND. The API returns a networkFee value, which, according to the documentation (Estimate the required fee for an asset), is supposed to represent the full network fee in base asset units. However, I’ve noticed that this value seems significantly off, nearly 4 times lower than expected, and it appears that the API consistently returns the same value. How is this networkFee calculated? Should I be applying a multiplier to this value?