add model subject subscriber topic

js/model/selly.go

@@ -63,3 +63,11 @@ type CashFlowOptions struct {
 	CampaignID   string `json:"campaignId,omitempty"`
 	CampaignName string `json:"campaignName,omitempty"`
 }
+
+// SubscriberNotificationTopic ...
+type SubscriberNotificationTopic struct {
+	User     string `json:"user"`
+	Topic    string `json:"topic"`
+	DeviceId string `json:"deviceId"`
+	FCMToken string `json:"fcmToken"`
+}