The unique identifier of the Twitter List to which the user will be added.
user_idstring
Required
Unique identifier of the User to add to the list. If you have a username, convert it to a `user_id` first (e.g., via GET /2/users/by/username/{username}).
Observable output
data
Required
Data from the action execution
errorstring
Error if any occurred during the execution of the action
successfulboolean
Required
Whether or not the action execution was successful or not