How to get login user name and host name in pgaudit

I installed latest pgaudit (1.2) with pg10. I am testing it and I see that
it does not log the login user name and host name.

For example, if user mary is running select * from sensitive_table, I want
Mary and the machine from where she ran in the log.

It seems to log the ids which needs to be joined with pg_ views to convert
it into login user name and host name.

any pointers on how to get it done.

thanks.

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