Here is the description of response attributes, which returns in the form of JSON.

Attributes	Description
access_token	This access token is used as authentication key to validate user has rights to access specific api or not. It contains encrypted user details with event mapped with the user.
expires_in	The expires_in returns date and time of access token expiration.
redirectUrl	It contains redirect url based on user role after successfully login.
showExhibitorMenu	It returns true if user is a exhibitor admin or lead retriever else it returns false.
userId	The userId returns unique value associated with user.
userRole	The userrole returns the role of user associated with mapped event.
whiteLabelURL	White label url is a unique url which is managed and provided by white label admin.
countryCode	This field return's the user's country code
email	This field returns logging user's email id.
eventId	This field returns unique event id in which user have logged in.
firstName	This field returns logged in user's first name.
lastName	This field returns logged in user's last name.
marketingOptIn	User want to receive email updates.
phonenumber	This field returns logged in user's phone number.
role	This field returns logged in user's roles in list.
userId	The userId returns unique value associated with user.
userProfilePhoto	This field returns logged in user's profile photo url.

Here is the possible error messages, which return if any condition gets failed or required data is missing for processing.

Error Code	Error Description
4040100	No User could be found.