GET list subscribers id
Check if the specified user is a subscriber of the specified list.
http://api.twitter.com/1/{{user}}/{{list_id}}/subscribers/{{id}}.{{response_format}}
true
Check if the specified user is a subscriber of the specified list.
http://api.twitter.com/1/{{user}}/{{list_id}}/subscribers/{{id}}.{{response_format}}
true