Add a single tag to a user in Intercom.
- Name (text): the name of the tag. If you have pre-defined tags within your Intercom account, you can add those tags to the user by exactly matching the spelling and case.
- Intercom ID (text): the unique, system-generated ID of the user in Intercom.
- ID (text): the unique, system-generated ID of the tag that was added to the user.