diff --git a/src/routes/v1/notificationRouter.test.ts b/src/routes/v1/notificationRouter.test.ts
index 6f6fa7a..0bb403d 100644
--- a/src/routes/v1/notificationRouter.test.ts
+++ b/src/routes/v1/notificationRouter.test.ts
@@ -2167,6 +2167,126 @@ function sendNotificationTestCases() {
       );
     }
   });
+
+  it('should create *Project Ownership Changed To* notification,  success', async () => {
+    const data = {
+      eventName: 'Project ownership changed to',
+      sendEmail: true,
+      sendSegment: true,
+      creationTime: 1667992708000,
+      segment: {
+        payload: {
+          email: 'aliebrahimi2079@gmail.com',
+          ownerName: 'Ali',
+          projectName: 'Test Project',
+        },
+      },
+    };
+
+    const result = await axios.post(sendNotificationUrl, data, {
+      headers: {
+        authorization: getGivethIoBasicAuth(),
+      },
+    });
+
+    assert.equal(result.status, 200);
+    assert.isOk(result.data);
+    assert.isTrue(result.data.success);
+  });
+  it('should create *Project Ownership Changed To* notification, failed invalid payload', async () => {
+    try {
+      const data = {
+        eventName: 'Project ownership changed to',
+        sendEmail: true,
+        sendSegment: true,
+        creationTime: 1667992708000,
+        segment: {
+          payload: {
+            email: 'aliebrahimi2079@gmail.com',
+            ownerName: 'Ali',
+            projectName: 'Test Project',
+            invalidField: 'invalid data',
+          },
+        },
+      };
+      await axios.post(sendNotificationUrl, data, {
+        headers: {
+          authorization: getGivethIoBasicAuth(),
+        },
+      });
+      // If request doesn't fail, it means this test failed
+      assert.isTrue(false);
+    } catch (e: any) {
+      assert.equal(
+        e.response.data.message,
+        errorMessagesEnum.IMPACT_GRAPH_VALIDATION_ERROR.message,
+      );
+      assert.equal(
+        e.response.data.description,
+        '"segment.payload.invalidField" is not allowed',
+      );
+    }
+  });
+
+  it('should create *Project Ownership Changed From* notification,  success', async () => {
+    const data = {
+      eventName: 'Project ownership changed from',
+      sendEmail: true,
+      sendSegment: true,
+      creationTime: 1667992708000,
+      segment: {
+        payload: {
+          email: 'aliebrahimi2079@gmail.com',
+          ownerName: 'Ali',
+          projectName: 'Test Project',
+        },
+      },
+    };
+
+    const result = await axios.post(sendNotificationUrl, data, {
+      headers: {
+        authorization: getGivethIoBasicAuth(),
+      },
+    });
+
+    assert.equal(result.status, 200);
+    assert.isOk(result.data);
+    assert.isTrue(result.data.success);
+  });
+  it('should create *Project Ownership Changed From* notification, failed invalid payload', async () => {
+    try {
+      const data = {
+        eventName: 'Project ownership changed from',
+        sendEmail: true,
+        sendSegment: true,
+        creationTime: 1667992708000,
+        segment: {
+          payload: {
+            email: 'aliebrahimi2079@gmail.com',
+            ownerName: 'Ali',
+            projectName: 'Test Project',
+            invalidField: 'invalid data',
+          },
+        },
+      };
+      await axios.post(sendNotificationUrl, data, {
+        headers: {
+          authorization: getGivethIoBasicAuth(),
+        },
+      });
+      // If request doesn't fail, it means this test failed
+      assert.isTrue(false);
+    } catch (e: any) {
+      assert.equal(
+        e.response.data.message,
+        errorMessagesEnum.IMPACT_GRAPH_VALIDATION_ERROR.message,
+      );
+      assert.equal(
+        e.response.data.description,
+        '"segment.payload.invalidField" is not allowed',
+      );
+    }
+  });
 }
 
 function sendBulkNotificationsTestCases() {
diff --git a/src/services/notificationService.test.ts b/src/services/notificationService.test.ts
index 01c0f75..ec23aad 100644
--- a/src/services/notificationService.test.ts
+++ b/src/services/notificationService.test.ts
@@ -50,4 +50,62 @@ describe('activityCreator', () => {
       }),
     );
   });
+
+  it('should create attributes for PROJECT_OWNER_CHANGED_TO', () => {
+    const payload = {
+      email: 'test@example.com',
+      ownerName: 'Test Owner',
+      projectName: 'Test Project',
+    };
+    const result = activityCreator(
+      payload,
+      NOTIFICATIONS_EVENT_NAMES.PROJECT_OWNERSHIP_CHANGED_TO,
+    );
+    expect(JSON.stringify(result)).equal(
+      JSON.stringify({
+        activities: [
+          {
+            activity_id: 'act:cm:ownership-changed-to',
+            attributes: {
+              'str:cm:ownername': payload.ownerName,
+              'str:cm:projectname': payload.projectName,
+            },
+            fields: {
+              'str::email': payload.email,
+            },
+          },
+        ],
+        merge_by: ['str::email'],
+      }),
+    );
+  });
+
+  it('should create attributes for PROJECT_OWNER_CHANGED_FROM', () => {
+    const payload = {
+      email: 'test@example.com',
+      ownerName: 'Test Owner',
+      projectName: 'Test Project',
+    };
+    const result = activityCreator(
+      payload,
+      NOTIFICATIONS_EVENT_NAMES.PROJECT_OWNERSHIP_CHANGED_FROM,
+    );
+    expect(JSON.stringify(result)).equal(
+      JSON.stringify({
+        activities: [
+          {
+            activity_id: 'act:cm:ownership-changed-from',
+            attributes: {
+              'str:cm:ownername': payload.ownerName,
+              'str:cm:projectname': payload.projectName,
+            },
+            fields: {
+              'str::email': payload.email,
+            },
+          },
+        ],
+        merge_by: ['str::email'],
+      }),
+    );
+  });
 });