Azure PostgreSQL Database Audit Logs - Single and Flexible Server Audit Logs

Azure PostgreSQL Single Audit Log
https://learn.microsoft.com/en-us/azure/postgresql/single-server/concepts-audit

Azure PostgreSQL Flexible Audit Log
https://learn.microsoft.com/en-us/azure/postgresql/flexible-server/concepts-audit

pgaudit log format
https://github.com/pgaudit/pgaudit/blob/master/README.md#format

log_line_prefix (string)
"Each audit entry is indicated by AUDIT: near the beginning of the log line. The format of the rest of the entry is detailed in the [pgAudit documentation](https://github.com/pgaudit/pgaudit/blob/master/README.md#format).

If you need any other fields to satisfy your audit requirements, use the Postgres parameter log_line_prefix. The string log_line_prefix is output at the beginning of every Postgres log line."
https://www.postgresql.org/docs/current/runtime-config-logging.html#GUC-LOG-LINE-PREFIX

We use flexible server.