diff --git a/templates/project/app/events/event_demo.go.tpl b/templates/project/app/events/event_demo.go.tpl
index 57de3d7..35a9f75 100644
--- a/templates/project/app/events/event_demo.go.tpl
+++ b/templates/project/app/events/event_demo.go.tpl
@@ -2,70 +2,51 @@ package events
 
 import (
 	"encoding/json"
-	"fmt"
-	"time"
 
 	"git.ipao.vip/rogeecn/atom/contracts"
-	"github.com/ThreeDotsLabs/watermill"
 	"github.com/ThreeDotsLabs/watermill/message"
 	"github.com/sirupsen/logrus"
 )
 
-var _ contracts.EventHandler = (*UserRegister)(nil)
-
-type Event struct {
-	ID int `json:"id"`
-}
-
-type ProcessedEvent struct {
-	ProcessedID int       `json:"processed_id"`
-	Time        time.Time `json:"time"`
-}
+var (
+	_ contracts.EventHandler   = (*UserRegister)(nil)
+	_ contracts.EventPublisher = (*UserRegister)(nil)
+)
 
 // @provider(event)
 type UserRegister struct {
-	log *logrus.Entry `inject:"false"`
+	log *logrus.Entry `inject:"false" json:"-"`
+	ID  int64         `json:"id"`
 }
 
-func (u *UserRegister) Prepare() error {
+func (e *UserRegister) Prepare() error {
 	return nil
 }
 
-// Handler implements contracts.EventHandler.
-func (u *UserRegister) Handler(msg *message.Message) ([]*message.Message, error) {
-	consumedPayload := Event{}
-	err := json.Unmarshal(msg.Payload, &consumedPayload)
-	if err != nil {
-		// When a handler returns an error, the default behavior is to send a Nack (negative-acknowledgement).
-		// The message will be processed again.
-		//
-		// You can change the default behaviour by using middlewares, like Retry or PoisonQueue.
-		// You can also implement your own middleware.
-		return nil, err
-	}
-
-	fmt.Printf("received event %+v\n", consumedPayload)
-
-	newPayload, err := json.Marshal(ProcessedEvent{
-		ProcessedID: consumedPayload.ID,
-		Time:        time.Now(),
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	newMessage := message.NewMessage(watermill.NewUUID(), newPayload)
-
-	return nil, nil
-	return []*message.Message{newMessage}, nil
+// Marshal implements contracts.EventPublisher.
+func (e *UserRegister) Marshal() ([]byte, error) {
+	return json.Marshal(e)
 }
 
 // PublishToTopic implements contracts.EventHandler.
-func (u *UserRegister) PublishToTopic() string {
-	return "event:processed"
+func (e *UserRegister) PublishToTopic() string {
+	return TopicProcessed.String()
 }
 
 // Topic implements contracts.EventHandler.
-func (u *UserRegister) Topic() string {
-	return "event:user-register"
+func (e *UserRegister) Topic() string {
+	return TopicUserRegister.String()
+}
+
+// Handler implements contracts.EventHandler.
+func (e *UserRegister) Handler(msg *message.Message) ([]*message.Message, error) {
+	var payload UserRegister
+	err := json.Unmarshal(msg.Payload, &payload)
+	if err != nil {
+		return nil, err
+	}
+
+	e.log.Infof("received event %+v\n", payload)
+
+	return nil, nil
 }
diff --git a/templates/project/app/events/topics.go.tpl b/templates/project/app/events/topics.go.tpl
new file mode 100644
index 0000000..bf9c96a
--- /dev/null
+++ b/templates/project/app/events/topics.go.tpl
@@ -0,0 +1,10 @@
+package events
+
+// swagger:enum Topic
+// ENUM(
+//
+//	Processed = "event:processed"
+//	UserRegister = "user:register"
+//
+// )
+type Topic string
diff --git a/templates/project/app/service/event/event.go.tpl b/templates/project/app/service/event/event.go.tpl
index 28dca83..8fbe71a 100644
--- a/templates/project/app/service/event/event.go.tpl
+++ b/templates/project/app/service/event/event.go.tpl
@@ -6,7 +6,7 @@ import (
 	"{{.ModuleName}}/app/events"
 	"{{.ModuleName}}/app/service"
 	"{{.ModuleName}}/providers/app"
-	providerEvents "{{.ModuleName}}/providers/events"
+	"{{.ModuleName}}/providers/event"
 	"{{.ModuleName}}/providers/postgres"
 
 	"git.ipao.vip/rogeecn/atom"
@@ -41,7 +41,7 @@ type Service struct {
 	dig.In
 
 	App      *app.Config
-	PubSub   *providerEvents.PubSub
+	PubSub   *event.PubSub
 	Initials []contracts.Initial `group:"initials"`
 }
 
diff --git a/templates/project/app/service/service.go.tpl b/templates/project/app/service/service.go.tpl
index 2829ec2..7054622 100644
--- a/templates/project/app/service/service.go.tpl
+++ b/templates/project/app/service/service.go.tpl
@@ -2,7 +2,7 @@ package service
 
 import (
 	"{{.ModuleName}}/providers/app"
-	"{{.ModuleName}}/providers/events"
+	"{{.ModuleName}}/providers/event"
 
 	"git.ipao.vip/rogeecn/atom/container"
 )
@@ -10,6 +10,6 @@ import (
 func Default(providers ...container.ProviderContainer) container.Providers {
 	return append(container.Providers{
 		app.DefaultProvider(),
-		events.DefaultProvider(),
+		event.DefaultProvider(),
 	}, providers...)
 }
diff --git a/templates/project/providers/events/config.go.tpl b/templates/project/providers/event/config.go.tpl
similarity index 73%
rename from templates/project/providers/events/config.go.tpl
rename to templates/project/providers/event/config.go.tpl
index 69c79a2..1f98a8f 100644
--- a/templates/project/providers/events/config.go.tpl
+++ b/templates/project/providers/event/config.go.tpl
@@ -1,10 +1,11 @@
-package events
+package event
 
 import (
 	"context"
 
 	"git.ipao.vip/rogeecn/atom/container"
 	"git.ipao.vip/rogeecn/atom/utils/opt"
+	"github.com/ThreeDotsLabs/watermill"
 	"github.com/ThreeDotsLabs/watermill/message"
 )
 
@@ -46,3 +47,18 @@ func (ps *PubSub) Handle(
 ) {
 	ps.Router.AddHandler(handlerName, consumerTopic, ps.Subscriber, publisherTopic, ps.Publisher, handler)
 }
+
+// publish
+func (ps *PubSub) Publish(e contracts.EventPublisher) error {
+	if e == nil {
+		return nil
+	}
+
+	payload, err := e.Marshal()
+	if err != nil {
+		return err
+	}
+
+	msg := message.NewMessage(watermill.NewUUID(), payload)
+	return ps.Publisher.Publish(e.Topic(), msg)
+}
diff --git a/templates/project/providers/events/logrus_adapter.go.tpl b/templates/project/providers/event/logrus_adapter.go.tpl
similarity index 99%
rename from templates/project/providers/events/logrus_adapter.go.tpl
rename to templates/project/providers/event/logrus_adapter.go.tpl
index a47ab64..b4cdd41 100644
--- a/templates/project/providers/events/logrus_adapter.go.tpl
+++ b/templates/project/providers/event/logrus_adapter.go.tpl
@@ -1,4 +1,4 @@
-package events
+package event
 
 import (
 	"github.com/ThreeDotsLabs/watermill"
diff --git a/templates/project/providers/events/provider.go.tpl b/templates/project/providers/event/provider.go.tpl
similarity index 97%
rename from templates/project/providers/events/provider.go.tpl
rename to templates/project/providers/event/provider.go.tpl
index c228926..f189156 100644
--- a/templates/project/providers/events/provider.go.tpl
+++ b/templates/project/providers/event/provider.go.tpl
@@ -1,4 +1,4 @@
-package events
+package event
 
 import (
 	"git.ipao.vip/rogeecn/atom/container"
diff --git a/templates/project/providers/events/provider_kafka.go.tpl b/templates/project/providers/event/provider_kafka.go.tpl
similarity index 98%
rename from templates/project/providers/events/provider_kafka.go.tpl
rename to templates/project/providers/event/provider_kafka.go.tpl
index 6f58f97..52e4a31 100644
--- a/templates/project/providers/events/provider_kafka.go.tpl
+++ b/templates/project/providers/event/provider_kafka.go.tpl
@@ -1,4 +1,4 @@
-package events
+package event
 
 import (
 	"git.ipao.vip/rogeecn/atom/container"
diff --git a/templates/project/providers/events/provider_redis.go.tpl b/templates/project/providers/event/provider_redis.go.tpl
similarity index 98%
rename from templates/project/providers/events/provider_redis.go.tpl
rename to templates/project/providers/event/provider_redis.go.tpl
index 0d48bb4..e6fd5bb 100644
--- a/templates/project/providers/events/provider_redis.go.tpl
+++ b/templates/project/providers/event/provider_redis.go.tpl
@@ -1,4 +1,4 @@
-package events
+package event
 
 import (
 	"git.ipao.vip/rogeecn/atom/container"
diff --git a/templates/project/providers/events/provider_sql.go.tpl b/templates/project/providers/event/provider_sql.go.tpl
similarity index 98%
rename from templates/project/providers/events/provider_sql.go.tpl
rename to templates/project/providers/event/provider_sql.go.tpl
index b862313..e48e520 100644
--- a/templates/project/providers/events/provider_sql.go.tpl
+++ b/templates/project/providers/event/provider_sql.go.tpl
@@ -1,4 +1,4 @@
-package events
+package event
 
 import (
 	sqlDB "database/sql"