simpleForm3.json

{
    "type": "AdaptiveCard",
    "$schema": "https://adaptivecards.io/schemas/adaptive-card.json",
    "version": "1.3",
    "body": [
        {
            "type": "Input.Text",
            "placeholder": "Your family name...",
            "label": "Family Name",
            "id": "familyname"
        },
        {
            "type": "Input.Text",
            "placeholder": "Placeholder text",
            "label": "Your first name...",
            "id": "firstname"
        },
        {
            "type": "Input.Date",
            "label": "Date of birth"
        },
        {
            "type": "Input.Text",
            "label": "Your Email",
            "placeholder": "email@domain.com",
            "id": "email"
        },
        {
            "type": "Input.Text",
            "placeholder": "Placeholder text",
            "label": "Password",
            "id": "pwd"
        }
    ],
    "actions": [
        {
            "type": "Action.Submit",
            "title": "Sign Up"
        }
    ]
}