What are the permissions needed to make the messenger flow work in facebook?

What are the facebook developer app permission I need to make my messenger flow work

My app is of type Business & I have public_profile,email,pages_manage_metadata,pages_read_engagement,pages_show_list,pages_messaging
these permissions with app review approval.

But when i connected my app to a facebook page, I couldn’t find the permissions listed in
Advance messaging->connected app -> view permissions.

I subscribed to the app as well

"data": [
        "category": "Business",
        "link": "<LINK>",
        "name": "<FB APP NAME>",
        "id": "<ID>",
        "subscribed_fields": ["messages","message_deliveries","message_reads","message_echoes"]

Can someone please help me here ?

Source: Facebook SDK Questions