diff --git a/utils/websocket.js b/utils/websocket.js
index 22a647b..9b0b10c 100644
--- a/utils/websocket.js
+++ b/utils/websocket.js
@@ -269,8 +269,13 @@ class WebSocketClass {
 			event: event,
 			type: type,
 			id: this.id,
-			channel: channel
-		};
+			channel: channel,
+			
+		};
+		if('pairsgroup'===type){
+			data.model='contract'
+		}
+		
 		if (date) {
 			data.fromDate = date.fromDate
 			data.toDate = date.toDate