tttjjj/elt_bench huggingface dataset:
contact_id: The ID for the contact. Example - CID_012345678901234
contact_lookup_id: Optional contact lookup ID for individual distribution.
directory_id: The directory ID, also known as a pool ID. Example - POOL_012345678901234
mailing_list_id: The ID for the mailing list.
name: Name of the mailing list.
owner_id: The unique identifier for a specific user who owns this.
unsubscribe_date: Date and time the user opted out of this mailing list.
unsubscribed: Boolean indicating if the user unsubscribed.