An update publishing system receives update data representing an update made to a lightweight directory access protocol (LDAP)-based database. The publishing system identifies a list corresponding to the update data, converts the data into a wire level data format, and sends the converted data to an advanced message queuing protocol (AMQP) exchange corresponding to the list. The exchange enables a client not able to process update data in LDAP data format to receive data in a format that is compatible with the client. An update subscribing system subscribes to an AMQP messaging system for updates made to the LDAP-based database. The subscribing system receives update data from the messaging system, where the update data is in the different data format, identifies an entry identifier in the update data, and replaces an entry in a second database that has a matching entry identifier with an entry in the update data.