Upsert by User

API supports and encourages adding users to sessions as attendees with the help of User GUIDs. Below is all the accepted parameters for adding a user to a session as an attendee:

Parameter	Type	Required	Default	Description
user_guid	string	Yes	n/a	GUID of the user that will be added to the session as a participant
role	string	No	See hint below	Role of the attendee(see)
email	string	No	See hint below	Attendee's email address
name	string	No	See hint below	Attendee's name
surname	string	No	See hint below	Attendee's surname
mobile	string	No	See hint below	Attendee's mobile

If the optional parameters are not sent, they will default to the user's ones.