OrderServiceExternal

getOrdersUpdateStreamByGroupsOrLogins: Streams updates to pending orders for specified accounts and groups, accepts a PBOrdersUpdateStreamRequestExternal message with the systemUuid, logins, groups, and flags for blocked/locked orders, returns a stream of PBOrdersUpdateStreamResponseExternal messages containing order details such as ID, symbol, alias, volume, type, creation time, activation price, side, stop loss, take profit, comment, update type, group, and login.