Setting Expiration date when importing CVS

I am using a plugin called “Import Users from CSV” to import users into the site.

I want to be able to specify the expiration date for the users on the import and set the other expiration actions (change of role etc).

I can specify custom user meta data in the CSV that I am importing.

Can you please let me know what I should be putting as field names / values to get this to work?

I have looked in the MySQL DB for field names and can find _expire_user_date and _expire_user_settings, but the format for the date field looks like just a random lot of numbers and not a date format.

Any help is greatly appreciated.

https://www.ads-software.com/plugins/expire-users/