The role used for the replication connection must have
   the REPLICATION attribute (or be a superuser).  Access for the role must be
   configured in pg_hba.conf and it must have the
   LOGIN attribute.
  
   In order to be able to copy the initial table data, the role used for the
   replication connection must have the SELECT privilege on
   a published table (or be a superuser).
  
   To create a publication, the user must have the CREATE
   privilege in the database.
  
To add tables to a publication, the user must have ownership rights on the table. To create a publication that publishes all tables automatically, the user must be a superuser.
To create a subscription, the user must be a superuser.
The subscription apply process will run in the local database with the privileges of a superuser.
Privileges are only checked once at the start of a replication connection. They are not re-checked as each change record is read from the publisher, nor are they re-checked for each change when applied.