get Start Time
Start timestamp (milliseconds) for the query.
Messages will be fetched starting from this timestamp based on the query direction. Default is 0, indicates From latest (Descending) or earliest (Ascending) message start.
Start timestamp (milliseconds) for the query.
Messages will be fetched starting from this timestamp based on the query direction. Default is 0, indicates From latest (Descending) or earliest (Ascending) message start.