add callback to subscribe

src/common/logs_events.rs

@@ -0,0 +1,11 @@
+use serde::{Serialize, Deserialize};
+use crate::common::logs_data::{CreateTokenInfo, TradeInfo};
+use crate::common::event::{CreateEvent, TradeEvent};
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub enum DexEvent {
+    NewToken(CreateTokenInfo),
+    NewUserTrade(TradeInfo),
+    NewBotTrade(TradeInfo),
+    Error(String),
+}