curl --request POST \
  --url https://int-api.mx.com/data_exchange/grantee/{grantee_client_guid}/grants/{grant_guid}/token \
  --header 'Accept-Version: <accept-version>' \
  --header 'Authorization: Basic <encoded-value>'

import requests

url = "https://int-api.mx.com/data_exchange/grantee/{grantee_client_guid}/grants/{grant_guid}/token"

headers = {
    "Accept-Version": "<accept-version>",
    "Authorization": "Basic <encoded-value>"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Accept-Version': '<accept-version>', Authorization: 'Basic <encoded-value>'}
};

fetch('https://int-api.mx.com/data_exchange/grantee/{grantee_client_guid}/grants/{grant_guid}/token', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://int-api.mx.com/data_exchange/grantee/{grantee_client_guid}/grants/{grant_guid}/token",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_HTTPHEADER => [
    "Accept-Version: <accept-version>",
    "Authorization: Basic <encoded-value>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://int-api.mx.com/data_exchange/grantee/{grantee_client_guid}/grants/{grant_guid}/token"

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

	req.Header.Add("Accept-Version", "<accept-version>")
	req.Header.Add("Authorization", "Basic <encoded-value>")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://int-api.mx.com/data_exchange/grantee/{grantee_client_guid}/grants/{grant_guid}/token")
  .header("Accept-Version", "<accept-version>")
  .header("Authorization", "Basic <encoded-value>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://int-api.mx.com/data_exchange/grantee/{grantee_client_guid}/grants/{grant_guid}/token")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Accept-Version"] = '<accept-version>'
request["Authorization"] = 'Basic <encoded-value>'

response = http.request(request)
puts response.read_body

{
  "token": "<string>"
}