Go中另一个lambda调用的AWS Lambda签名

The standard signature of a Go AWS Lambda handler which is invoked by API Gateway is as follows:

func Handler(e events.APIGatewayProxyRequest) (events.APIGatewayProxyResponse, error) {
    //your code
}

func main() {
    lambda.Start(Handler)
}

Now, this lambda needs to invoke another lambda using lambda.Invoke, and I am not sure what the signature of my invoked lambda needs to be.

I would appreciate some usage examples(samples) along with the signature.