$co_author = Array
(
    [ID] => 193
    [user_firstname] => Rajeev
    [user_lastname] => Nair
    [nickname] => rajeev.d.nair
    [user_nicename] => rajeev-d-nair
    [display_name] => Rajeev Nair
    [user_email] => rajeev.d.nair@accenture.com
    [user_url] => 
    [user_registered] => 2020-03-12 16:51:58
    [user_description] => 
    [user_avatar] => 
)