url := "https://api.iocparser.com/url"
payload := strings.NewReader("{\n \"url\": \"https://blocklist.cyberthreatcoalition.org/vetted/domain.txt\"\n}")
req, err := http.NewRequest(method, url, payload)
req.Header.Add("Content-Type", "application/json")
res, err := client.Do(req)
body, err := ioutil.ReadAll(res.Body)
fmt.Println(string(body))