Sub header is not being shown in chat

I am using { "head": { "text": "header", "sub_head": { "text": "sub header" } } }

but the sub header is now being rendered,

The incoming Webhook message show the connection name, as well. How can we turn it off?

Hi @diwakar.prajapati
Thanks for reaching out to us and welcome to our Developer Community, I am happy to help here!
Have you been able to troubleshoot this on your end?

I can still see the Connection in my zoom chat.

Could you please describe more details about this issue?
I do not understand what you mean @diwakar.prajapati