Only request sendcapability for user state key

src/backends/widget.js

@@ -18,6 +18,8 @@ import WidgetApi from 'matrix-widget-api';
 
 class WidgetBackend extends BaseBackend {
   constructor(widgetId, userId) {
+    this.userId = userId;
+
     this.api = new WidgetApi(widgetId);
     this.requestCapabilities();
     this.api.star();
@@ -27,7 +29,7 @@ class WidgetBackend extends BaseBackend {
     this.api.requestCapabilityToReceiveState(EventTypes.map);
     this.api.requestCapabilityToReceiveState(EventTypes.player);
 
-    this.api.requestCapabilityToSendState(EventTypes.player);
+    this.api.requestCapabilityToSendState(EventTypes.player, this.userId);
   }
 
   set game(value) {