Added UserId to participant

util/extract.go

@@ -313,6 +313,7 @@ func ExtractWithAttributes(base models.AnalyticsConversationWithAttributes) (mod
 			Name:              &p.ParticipantName,
 			Purpose:           &p.Purpose,
 			Attributes:        &attributesBytesStr,
+			UserId:            &p.UserId,
 		}
 		participants = append(participants, participant)