How do I access Cue identifier and the comment in a webvtt file?

[avinassh]

Following is a webvtt file I have:

Mark 72
11:01:15.200 --> 11:01:16.201
Some Subtitle - 1 

NOTE
{
"message": "some note"
}

Id 72
12:01:15.200 --> 12:01:16.201
Some Subtitle - 2

NOTE
{
"message": "some note"
}

And it is valid.

Now the cue 1 has identifier Mark 72 and also a comment. How do I parse/read it?

[sannies]

-- I'm not an author of this lib --
The current data model does not support any comment or id per caption. --> Not possible atm