Can I watch the WWE Network on Xbox?

Yes, but there is one catch. You need to have an Xbox Live Gold subscription. That is separate from the WWE Network subscription. Here are the instructions from WWE:

In order to experience WWE Network on the Xbox 360, you must have an Xbox 360 with an Xbox Live Gold subscription, and be a WWE Network subscriber.

To use your Xbox 360 with your WWE Network subscription, download the free WWE app from the Apps Marketplace.

1. Go to the Apps menu and browse for WWE.
2. Choose and download the WWE app.

If you are a subscriber:

1. Sign in to your Xbox Live Profile.
2. Press Subscriber Sign In using the A button on the control.
3. Sign in to your WWE account.
4. Enter your Email Address using the onscreen keyboard to enter your information.
5. Press A to select.
6. Enter your Password using the onscreen keyboard to enter your information.
7. Press A to select.
8. Press A to select Continue.
9. Once your account has been verified, you will be taken to the home screen and can select the programming from WWE Network that you want to watch.