/ff/update

{
    "id": 1, // Number: UserID
    "token": "session_key", // String: sessionKey provided from /auth
    "flagid": 1, // Number: ID of the flag
    "name": "Really Cool Rainbow", // String: name of the fast flag
    "value": 0.5, // Number: Float between 0 and 1 for the percentage of servers
}

{
    "code": 200, // Number: IETF Status Code
    "status": "Session Key OK", // String: Success
    "flagId": 1, // Number: ID of the flag
}