User has subscribed to Anwar's Channel (free, unlimited followers). New post arrives. They tap to open the Channel.
The Updates tab is a separate tab in WhatsApp (between Chats and Calls). Channels appear here — not in the main chat list.
Subscribing to a Channel is free and anonymous — the Channel operator never sees a subscriber's phone number. Unlimited followers at no cost.
The unread badge (green "1") shows a new post from "Sahel News & Safety" — the pseudonymous Upinion channel.