How does the import work?

[logkirk]

I exported some rules I had created, and the rule structure appears to be in the following format:

[
	{
		"action": "junk",
		"id": "XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX",
		"type": "any",
		"caseSensitive": false,
		"subAction": "none",
		"phrase": "foobar",
		"useRegex": false
	}
]

Is there a reference for the values these fields can take? What is the "id" field and how should this be set if I want to create new rules in JSON format and import them?