Here are the possible error messages, which return if any condition gets failed or required data is missing for processing.
Event Not Found
Cant create URL
Here is the description of response attributes, which returns to the form of a JSON array.
This contains the first name of the user.
This contains the last name of the user.
This contains an image of the user.
This contains a user leader board point.
This contains a user id that is unique.
This contains title.