diff --git a/types.go b/types.go
index 2d4d70e..565aa6a 100644
--- a/types.go
+++ b/types.go
@@ -3,13 +3,13 @@ package main
 import "time"
 
 type Event struct {
-	Seq       int
-	Type      string
-	Hash      string
-	ItemID    string
-	EventID   string
-	Data      map[string]interface{}
-	Timestamp time.Time
+	Seq       int                    `json:"seq"`
+	Type      string                 `json:"type"`
+	Hash      string                 `json:"hash"`
+	ItemID    string                 `json:"item_id"`
+	EventID   string                 `json:"event_id"`
+	Data      map[string]interface{} `json:"data"`
+	Timestamp time.Time              `json:"timestamp"`
 }
 
 type SLItem struct {