diff --git a/pkg/model/audit_event.go b/pkg/model/audit_event.go
index 1813e8d..29cce48 100644
--- a/pkg/model/audit_event.go
+++ b/pkg/model/audit_event.go
@@ -10,36 +10,36 @@ type AuditEventType int32
 // User clicked "Submit", "Accept" etc
 const AuditEventTypeAction    AuditEventType = 0
 type AuditEventDataAction struct {
-	TargetStatus uint32 `json:"TargetStatus"`
+	TargetStatus uint32 `json:"target_status"`
 }
 
 // User wrote a comment
 const AuditEventTypeComment   AuditEventType = 1
 type AuditEventDataComment struct {
-	Comment string `json:"Comment"`
+	Comment string `json:"comment"`
 }
 
 // User changed Model
 const AuditEventTypeChangeModel AuditEventType = 2
 type AuditEventDataChangeModel struct {
-	OldModelID      uint64 `json:"OldModelID"`
-	OldModelVersion uint64 `json:"OldModelVersion"`
-	NewModelID      uint64 `json:"NewModelID"`
-	NewModelVersion uint64 `json:"NewModelVersion"`
+	OldModelID      uint64 `json:"old_model_id"`
+	OldModelVersion uint64 `json:"old_model_version"`
+	NewModelID      uint64 `json:"new_model_id"`
+	NewModelVersion uint64 `json:"new_model_version"`
 }
 // Validator validates model
 const AuditEventTypeChangeValidatedModel AuditEventType = 3
 type AuditEventDataChangeValidatedModel struct {
-	ValidatedModelID      uint64 `json:"ValidatedModelID"`
-	ValidatedModelVerison uint64 `json:"ValidatedModelVerison"`
+	ValidatedModelID      uint64 `json:"validated_model_id"`
+	ValidatedModelVerison uint64 `json:"validated_model_verison"`
 }
 
 // User changed DisplayName / Creator
 const AuditEventTypeChangeDisplayName AuditEventType = 4
 const AuditEventTypeChangeCreator AuditEventType = 5
 type AuditEventDataChangeName struct {
-	OldName string `json:"OldName"`
-	NewName string `json:"NewName"`
+	OldName string `json:"old_name"`
+	NewName string `json:"new_name"`
 }
 
 type AuditEvent struct {