1/// Subscribe Topics 2pub(crate) const SUBSCRIBE: u8 = 16; 3 4/// Unsubscribe Topics 5pub(crate) const UNSUBSCRIBE: u8 = 17; 6 7/// Push Notification 8/// 9/// Reference: <https://open.longportapp.com/en/docs/trade/trade-push#push-notification> 10pub(crate) const PUSH_NOTIFICATION: u8 = 18;