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    Set Up JSON Web Token Messaging
    To set up JSON Web Token messaging,  you will complete the tasks described in this
            section.
Figure:
Set Up JSON Web Token a Messaging 
- Sign up for a sandbox account. See Step 1: Sign Up for a Sandbox Account.
 - Create a P12 certificate. See Step 2: Create a P12 Certificate.
 - Construct a message using a JSON web token. See Step 3: Construct Messages Using JSON Web Tokens.
 - (Optional) Enable the optional message-level encryption (MLE) feature. See Step 4: Enable Message-Level Encryption.
 - Go live by transitioning your sandbox account into a production account. See Step 5: Going Live.