static void Main(string[] args)
{
var uri = "https://jnhisz7ebh.execute-api.eu-west-1.amazonaws.com/api/hostedzone/Z6ZMEKJJ7H3SC/domain/marcelrienks.com";
var region = "af-south-1";
var service = "execute-api";
var secretKey = "";
var secret = "";
var httpRequestMethod = "PATCH";
var canonicalUri = "%2Fapi%2Fhostedzone%2FZ6ZMEKJJ7H3SC%2Fdomain%2Fmarcelrienks.com";
var canonicalQueryString = string.Empty;
var canonicalHeaders = string.Empty;
var signedHeaders = string.Empty;
var requestPayload = string.Empty;
var canonicalRequest = $"{httpRequestMethod}\n{canonicalUri}\n{canonicalQueryString}\n{canonicalHeaders}\n{signedHeaders}\n{requestPayload}";
var signature = AWS4Signer.ComputeSignature(
awsAccessKey: secretKey,
awsSecretAccessKey: secret,
region: region,
signedAt: DateTime.Now,
service: service,
signedHeaders: signedHeaders,
canonicalRequest: canonicalRequest
);
Console.WriteLine(signature.Signature);
Console.ReadLine();
}