A json object has a key lastLogin. Value of it is a string.
I am trying to print firstName John and Blake
$scope._u
To parse "lastlogin": "{\"employees\":[{\"firstName\":\"John\"}, {\"firstName\":\"Blake\"}]}" data correctly you can use
angular.fromJson(User.lastLogin);
Just make sure that you are giving inner object i.e. lastlogin to the method and it will remove all invalid characters such as \ and " from the json data.