get eventpreview

URL: POST: /get/eventpreview

Request content:
{
    TOKEN: "the token",
    EVENTID: "the event id"
}

Response content:
{
    STATUS: "the status code", 
    EVENTDESCRIPTION: "the event description", 
    EVENTPICTURE: "the event picture encoded in base 64", 
    EVENTSTARTDATE: "the event start date", 
    EVENTENDDATE: "the event end date", 
    EVENTUSERREGISTERED: true // or false if the user is not registered to the event
}