CREATE PUBLICATION pub_sourceDB FOR TABLE 
table1,
...
table200;

SELECT pg_create_logical_replication_slot('sourceDB_repl_slot', 'pgoutput');

CREATE SUBSCRIPTION sub_sourceDB
CONNECTION 'host=localhost dbname=sourceDB user=u password=p' 
PUBLICATION pub_sourceDB with(create_slot=false, slot_name='sourceDB_repl_slot');