curl --request POST \
  --url https://api.mercemur.com/api/v1/segments/preview \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'Idempotency-Key: <idempotency-key>' \
  --data '{
  "rule": {}
}'

const options = {
  method: 'POST',
  headers: {
    'Idempotency-Key': '<idempotency-key>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({rule: {}})
};

fetch('https://api.mercemur.com/api/v1/segments/preview', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.mercemur.com/api/v1/segments/preview"

payload = { "rule": {} }
headers = {
    "Idempotency-Key": "<idempotency-key>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

package main

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

func main() {

	url := "https://api.mercemur.com/api/v1/segments/preview"

	payload := strings.NewReader("{\n  \"rule\": {}\n}")

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

	req.Header.Add("Idempotency-Key", "<idempotency-key>")
	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))

}

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.mercemur.com/api/v1/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([
    'rule' => [
        
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "Idempotency-Key: <idempotency-key>"
  ],
]);

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

curl_close($curl);

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

{
  "data": {
    "count": 123
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "resource": "<string>",
    "field": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "resource": "<string>",
    "field": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "resource": "<string>",
    "field": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "resource": "<string>",
    "field": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "resource": "<string>",
    "field": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "resource": "<string>",
    "field": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "resource": "<string>",
    "field": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "resource": "<string>",
    "field": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "resource": "<string>",
    "field": "<string>"
  }
}