-record(gshot,  { sequence=[], bids=[], asks=[] }).
-record(gdax,   { type=[], order_id=[], order_type=[],
                  size=[], client_oid=[], price=[], message=[], funds=[],
                  trade_id=[], maker_order_id=[], taker_order_id=[], new_funds=[], old_funds=[],
                  side=[], reason=[], remaining_size=[], new_size=[], old_size=[], last_trade_id=[],
                  product_id=[], sequence=[], time=[] }).