Creates a user account using an email and password.
User's email address.
User's password. Must meet the following security requirements:
"MySecurePassword123!"
User's first name.
"Jane"
RFC3339 timestamp indicating when the user accepted the Terms of Service.
"2025-02-19T16:00:00.000Z"
User's last name (optional).
"Doe"
Account successfully created.
The response is of type string.
"Account successfully created"