$co_author = Array
(
    [ID] => 199
    [user_firstname] => Regina
    [user_lastname] => Russ
    [nickname] => regina.russ
    [user_nicename] => regina-russ-2
    [display_name] => Regina Russ
    [user_email] => regina.russ@accenture.com
    [user_url] => 
    [user_registered] => 2020-04-15 22:15:44
    [user_description] => 
    [user_avatar] => 
)