fix: split event message id

[SputNikPlop]

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

Problem/Feature

This is addressing #184 since the cli doesn't match quite what is being used on the twitch website.

Description of Changes:

• Split event and subscription id

Checklist

• [x] My code follows the Contribution Guide
• [x] I have self-reviewed the changes being requested
• [x] I have made comments on pieces of code that may be difficult to understand for other editors
• [x] I have updated the documentation (if applicable)