diff --git a/lib/data/Formatter/BlockNotification.ts b/lib/data/Formatter/BlockNotification.ts
index 74507bf..21ca016 100644
--- a/lib/data/Formatter/BlockNotification.ts
+++ b/lib/data/Formatter/BlockNotification.ts
@@ -1,11 +1,13 @@
 import BigNumber from "bignumber.js";
 import { Converter } from "../index";
+import EventLog from "./EventLog";
 
 export default class BlockNotification {
   readonly hash: string;
   readonly height: BigNumber;
   readonly indexes: BigNumber[][];
   readonly events: BigNumber[][][];
+  readonly logs: EventLog[][][];
 
   constructor(data) {
     this.hash = data.hash;
@@ -29,5 +31,17 @@ export default class BlockNotification {
         }
       }
     }
+    if (data.logs) {
+      this.logs = [];
+      for (let i = 0; i < data.logs.length; i++) {
+        this.logs[i] = [];
+        for (let j = 0; j < data.logs[i].length; j++) {
+          this.logs[i][j] = [];
+          for (let k = 0; k < data.logs[i][j].length; k++) {
+            this.logs[i][j][k] = data.logs[i][j][k];
+          }
+        }
+      }
+    }
   }
 }
diff --git a/lib/data/Formatter/EventLog.ts b/lib/data/Formatter/EventLog.ts
new file mode 100644
index 0000000..03e5886
--- /dev/null
+++ b/lib/data/Formatter/EventLog.ts
@@ -0,0 +1,21 @@
+/*
+ * Copyright 2023 ICON Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export default interface EventLog {
+  scoreAddress: string;
+  indexed: string[];
+  data: string[];
+}
diff --git a/lib/data/Formatter/EventNotification.ts b/lib/data/Formatter/EventNotification.ts
index 9293618..fbd49fb 100644
--- a/lib/data/Formatter/EventNotification.ts
+++ b/lib/data/Formatter/EventNotification.ts
@@ -1,20 +1,26 @@
 import BigNumber from "bignumber.js";
 import { Converter } from "../index";
+import EventLog from "./EventLog";
 
 export default class EventNotification {
   readonly hash: string;
   readonly height: BigNumber;
   readonly index: BigNumber;
   readonly events: BigNumber[];
+  readonly logs: EventLog[];
 
   constructor(data) {
     this.hash = data.hash;
     this.height = Converter.toBigNumber(data.height);
     this.index = Converter.toBigNumber(data.index);
+    this.events = [];
+    this.logs = [];
     if (data.events) {
-      this.events = [];
-      for (let i = 0; i < data.events; i++)
+      for (let i = 0; i < data.events.length; i++)
         this.events[i] = Converter.toBigNumber(data.events[i]);
     }
+    if (data.logs) {
+      for (let i = 0; i < data.logs.length; i++) this.logs[i] = data.logs[i];
+    }
   }
 }
diff --git a/lib/transport/monitor/BlockMonitorSpec.ts b/lib/transport/monitor/BlockMonitorSpec.ts
index 6936593..678b3d1 100644
--- a/lib/transport/monitor/BlockMonitorSpec.ts
+++ b/lib/transport/monitor/BlockMonitorSpec.ts
@@ -22,10 +22,12 @@ import { Converter } from "../../data";
 export default class BlockMonitorSpec implements MonitorSpec {
   readonly height: BigNumber;
   readonly eventFilters?: EventFilter[];
+  readonly logs?: boolean;
 
-  constructor(height: BigNumber, eventFilters?: EventFilter[]) {
+  constructor(height: BigNumber, eventFilters?: EventFilter[], logs?: boolean) {
     this.height = height;
     this.eventFilters = eventFilters;
+    this.logs = logs;
   }
 
   getPath(): string {
@@ -34,11 +36,13 @@ export default class BlockMonitorSpec implements MonitorSpec {
 
   getParam(): object {
     const height = Converter.toHex(this.height);
+    const params = { height };
+    if (this.logs) params["logs"] = "0x1";
     if (!this.eventFilters || this.eventFilters.length === 0) {
-      return { height };
+      return params;
     }
     return {
-      height: height,
+      ...params,
       eventFilters: this.eventFilters.map((v) => v.toObject()),
     };
   }
diff --git a/quickstart/example/html/MonitorExample.html b/quickstart/example/html/MonitorExample.html
index 14705ca..79ee4f4 100644
--- a/quickstart/example/html/MonitorExample.html
+++ b/quickstart/example/html/MonitorExample.html
@@ -15,6 +15,11 @@
         <br />
         <div>
             <h3>1. monitor block</h3>
+          <p>
+          <div><label for="M01-url">URL:</label><input type="text" id="M01-url" size="60" /></div>
+          <div><label for="M01-addr">Addr:</label><input type="text" id="M01-addr" size="45" /></div>
+          <div><label for="M01-event">Event:</label><input type="text" id="M01-event" size="60" /></div>
+          <p>
           <button id="M01-1">start monitoring</button>
           <button id="M01-2">stop</button>
           <p><span id="M01-3"></span></p>
diff --git a/quickstart/example/js/MonitorExample.ts b/quickstart/example/js/MonitorExample.ts
index 847e040..8a1596e 100644
--- a/quickstart/example/js/MonitorExample.ts
+++ b/quickstart/example/js/MonitorExample.ts
@@ -37,11 +37,17 @@ class MonitorExample {
   }
 
   async startMonitorBlock() {
+    const url = getInputValue('M01-url');
+    const addr = getInputValue('M01-addr');
+    const event = getInputValue('M01-event');
+    const provider: HttpProvider = new HttpProvider(url);
+    this.iconService = new IconService(provider);
     const block = await this.iconService.getLastBlock().execute();
     const height = block.height;
-    const spec = new BlockMonitorSpec(Converter.toBigNumber(height + 1));
+    const eventFilter = new EventFilter(event, addr);
+    const spec = new BlockMonitorSpec(Converter.toBigNumber(height + 1), [eventFilter], true);
     const onevent = (data: BlockNotification) => {
-      document.getElementById("M01-3").innerHTML = `block height : ${data.height}, block hash : ${data.hash}`;
+      document.getElementById("M01-3").innerHTML = JSON.stringify(data);
     }
     const onerror = (error) => {
       console.log(error);