if err != nil {
		t.Fatal(err)
	}

	dataFullSerialize := map[string]any{}
	if err := json.Unmarshal([]byte(ecdsaTokenJWS.FullSerialize()), &dataFullSerialize); err != nil {
		t.Fatal(err)
	}

	dataFullSerialize["malformed_iss"] = "." + base64.RawURLEncoding.EncodeToString([]byte(`{"iss":"bar"}`)) + "."

	out, err := json.Marshal(dataFullSerialize)
	if err != nil {
		t.Fatal(err)
	}