How to handle action submit in Bot

lvoouiilliot -If you look at Action.Submit in the schema, you will see that a submit action’s data property can be either a string or an object. When using the Bot Framework, clicking on a submit action will send a Bot Framework message activity to the bot. A string submit action will simply transfer its string data into the activity’s text property. An object submit action has a somewhat more complicated process of populating the activity’s value property while leaving the text property empty. Each input field in the object submit action’s card will be represented as a property of that value object and the properties will be named according to each input field’s ID. Any properties already in the object submit action’s data property will also be present in the value object.
Reference document - Using Adaptive Cards with the Microsoft Bot Framework - Microsoft Bot Framework
Also look into this sample-Microsoft-Teams-Samples/teamsBot.js at main · OfficeDev/Microsoft-Teams-Samples (github.com)