post https://api.zan.top/node/v1/starknet/mainnet/
Estimates the resources required by a given sequence of transactions when applied on a given state. If one of the transactions reverts or fails due to any reason (e.g. validation failure or an internal error), a TRANSACTION_EXECUTION_ERROR is returned. For v0-2 transactions the estimate is given in wei, and for v3 transactions it is given in fri.