user-post function.json

function.json

{
    "bindings": [{
            "authLevel": "anonymous",
            "type": "httpTrigger",
            "direction": "in",
            "name": "req",
            "methods": [
                "post"
            ],
            "route": "users"
        },
        {
            "type": "http",
            "direction": "out",
            "name": "res"
        }
    ]
}