Follow or Subscribe? There seems to be a table for it...

[BadVolf]

Hey, does anyone know about following or subscribing to a particular user? While poling around in the database, I came across a table called users_channel_subscribers with the following:

Column | Type | Collation | Nullable | Default
------------+---------+-----------+----------+----------------------------------
id | integer | | not null | generated by default as identity
channel_id | integer | | not null |
user_id | integer | | not null |
Indexes:
"users_channel_subscribers_pkey" PRIMARY KEY, btree (id)
"users_channel_subscribers_channel_id_799e674b" btree (channel_id)
"users_channel_subscribers_channel_id_user_id_7ddfe9f1_uniq" UNIQUE CONSTRAINT, btree (channel_id, user_id)
"users_channel_subscribers_user_id_5ee07707" btree (user_id)
Foreign-key constraints:
"users_channel_subscr_channel_id_799e674b_fk_users_cha" FOREIGN KEY (channel_id) REFERENCES users_channel(id) DEFERRABLE INITIALLY DEFERRED
"users_channel_subscribers_user_id_5ee07707_fk_users_user_id" FOREIGN KEY (user_id) REFERENCES users_user(id) DEFERRABLE INITIALLY DEFERRED

This seems to imply this site has that functionality. If so, how do I implement it? I didnt see anything in the admin docs. Thanks!