TeamsChat.json

{
  
    "$schema": "https://developer.microsoft.com/json-schemas/sp/column-formatting.schema.json",  
    "elmType": "div",  
    "children": [  
        {  
            "elmType": "a",  
            "style": {  
                "padding-right": "8px"  
            },  
            "txtContent": "Chat in Teams",  
        "attributes": {  
        "target": "_blank",  
        "href": {  
                    "operator": "+",  
                    "operands": [  
                        "https://teams.microsoft.com/l/chat/0/0?users=",  
                        "@currentField",  
                        "&message=Please order more widgets "
                    ]  
                }  
                  
            }  
        },  
        {  
            "elmType": "a",  
            "attributes": {  
        "target":"_blank",  
                "iconName": "TeamsLogo",  
                "class": "sp-field-quickActions",  
        "href": {  
                    "operator": "+",  
                    "operands": [  
                        "https://teams.microsoft.com/l/chat/0/0?users=",  
                        "@currentField",  
                        "&message=Please order more widgets"
                    ]  
                }  
                  
            }  
        }  
    ]  
}