$co_author = Array
(
    [ID] => 142
    [user_firstname] => David
    [user_lastname] => McGinty
    [nickname] => david.j.mcginty
    [user_nicename] => david-j-mcginty
    [display_name] => David McGinty
    [user_email] => david.j.mcginty@accenture.com
    [user_url] => 
    [user_registered] => 2019-09-30 22:59:17
    [user_description] => 
    [user_avatar] => 
)