Exchange a jwt token that contains secret per-user authentication information with a jwt that can be used for all other API endpoint invocations. The jwt is valid for 7 days.

The input jwt token should be encrypted with the HS256 JWT algorithm and the secret key obtained from [email protected]. This JWT token should contain the following custom claims:

• customer_id - A string that uniquely identifies the underlying customer account.
• sms_notification_phone_number - If specified, a string that contains a phone
  number (with +XXX international prefix) to which sms notifications should be
  sent whenever a human sends a reply to this customer
• name - A string which contains the customer's name to display in the Alcméon user profile
• attributes - A list of key/value string pairs: If specified, a set of key/value metadata
  fields which will be associated with the customer and displayed on the user profile page
  in Alcméon. Example: [["age", "24"], ["City", "Paris"]]