The confidence, from 0.0 to 1.0, of the reliability of the interval.
minimum0
maximum1
duration: optional number
The duration (in seconds) of the time interval.
published: optional boolean
The playlist's public/private status (if it should be added to the user's profile or not): true the playlist will be public, false the playlist will be private, null the playlist status is not relevant. For more about public/private status, see Working with Playlists
start: optional number
The starting point (in seconds) of the time interval.
