diff --git a/tx0/message/message_event_response.go b/tx0/message/message_event_response.go
index c1cae36..69b3e6a 100644
--- a/tx0/message/message_event_response.go
+++ b/tx0/message/message_event_response.go
@@ -13,5 +13,13 @@ type MessageEventResponse struct {
 	ScheduledMessageEventId uuid.UUID   `json:"scheduled_message_event_id,omitempty"`
 	Response                types.JSONB `json:"response"`
 	UserId                  uuid.UUID   `json:"user_id,omitempty"`
+	ContactId               *uuid.UUID  `json:"contact_id,omitempty"`
+	MessageId               *uuid.UUID  `json:"message_id,omitempty"`
+	Status                  *string     `json:"status"`
 	Sent                    time.Time   `json:"sent"`
 }
+
+const (
+	Message_Event_Response_Status_Instant   = "Instant"
+	Message_Event_Response_Status_Scheduled = "Scheduled"
+)