Enable and Show the Mailchimp (Embedded forms) for the Blog, is a fairly simple and quick process.
1. Log into your Blogger dashboard and go to Layout > Mailchimp. Click on Edit.
2. To enable the subscription form on the Blog, we need to add the line of code we extracted from the source code of the form field on the blog to make them work.
1. Line code - Add in the Content Field
https://farycreate.us3.list-manage.com/subscribe/post?u=815e3374851e9514aed401407&id=7d840ad9a3&f_id=00afbbe2f0
2. Line code - Add in the Title Field
b_815e3374851e9514aed401407_7d840ad9a3
In the widget to show the subscription form you have to click on the switch. Click on Save.