curl --request POST \
  --url https://api.orbit.devotel.io/api/v1/contacts/segments/preview \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "filters": {
    "op": "AND",
    "conditions": [
      {
        "field": "lifecycle_stage",
        "op": "equals",
        "value": "customer"
      },
      {
        "field": "country_code",
        "op": "equals",
        "value": "DE"
      }
    ]
  }
}
'

import requests

url = "https://api.orbit.devotel.io/api/v1/contacts/segments/preview"

payload = { "filters": {
        "op": "AND",
        "conditions": [
            {
                "field": "lifecycle_stage",
                "op": "equals",
                "value": "customer"
            },
            {
                "field": "country_code",
                "op": "equals",
                "value": "DE"
            }
        ]
    } }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    filters: {
      op: 'AND',
      conditions: [
        {field: 'lifecycle_stage', op: 'equals', value: 'customer'},
        {field: 'country_code', op: 'equals', value: 'DE'}
      ]
    }
  })
};

fetch('https://api.orbit.devotel.io/api/v1/contacts/segments/preview', 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://api.orbit.devotel.io/api/v1/contacts/segments/preview",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'filters' => [
        'op' => 'AND',
        'conditions' => [
                [
                                'field' => 'lifecycle_stage',
                                'op' => 'equals',
                                'value' => 'customer'
                ],
                [
                                'field' => 'country_code',
                                'op' => 'equals',
                                'value' => 'DE'
                ]
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

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

curl_close($curl);

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

package main

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

func main() {

	url := "https://api.orbit.devotel.io/api/v1/contacts/segments/preview"

	payload := strings.NewReader("{\n  \"filters\": {\n    \"op\": \"AND\",\n    \"conditions\": [\n      {\n        \"field\": \"lifecycle_stage\",\n        \"op\": \"equals\",\n        \"value\": \"customer\"\n      },\n      {\n        \"field\": \"country_code\",\n        \"op\": \"equals\",\n        \"value\": \"DE\"\n      }\n    ]\n  }\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.orbit.devotel.io/api/v1/contacts/segments/preview")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"filters\": {\n    \"op\": \"AND\",\n    \"conditions\": [\n      {\n        \"field\": \"lifecycle_stage\",\n        \"op\": \"equals\",\n        \"value\": \"customer\"\n      },\n      {\n        \"field\": \"country_code\",\n        \"op\": \"equals\",\n        \"value\": \"DE\"\n      }\n    ]\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.orbit.devotel.io/api/v1/contacts/segments/preview")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"filters\": {\n    \"op\": \"AND\",\n    \"conditions\": [\n      {\n        \"field\": \"lifecycle_stage\",\n        \"op\": \"equals\",\n        \"value\": \"customer\"\n      },\n      {\n        \"field\": \"country_code\",\n        \"op\": \"equals\",\n        \"value\": \"DE\"\n      }\n    ]\n  }\n}"

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

{
  "data": {},
  "meta": {}
}