Returns information needed to construct a new transaction including current epoch number.
epoch
POST /transaction/construction HTTP/1.1 Host: xrd-gateway.nownodes.io Accept: */*
Returns information needed to construct transaction.
{ "ledger_state": { "network": "<network-name>", "state_version": 1, "proposer_round_timestamp": "text", "epoch": 1, "round": 1 } }