curl --request POST \
  --url https://api.siftstack.com/api/v2/user-groups:add-user \
  --header 'Authorization: Bearer <token>'

import requests

url = "https://api.siftstack.com/api/v2/user-groups:add-user"

headers = {"Authorization": "Bearer <token>"}

response = requests.post(url, headers=headers)

print(response.text)

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.siftstack.com/api/v2/user-groups:add-user"

	req, _ := http.NewRequest("POST", url, nil)

	req.Header.Add("Authorization", "Bearer <token>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

{}

{
  "code": 123,
  "message": "<string>",
  "details": [
    {
      "@type": "<string>"
    }
  ]
}