curl --request POST \
  --url https://api.creditor.younegotiate.com/communications/groups/preview \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "subclient_id": "master",
  "file_upload_history_id": "all",
  "consumer_state": "not_viewed_offer",
  "custom_rules": {
    "placement_date": {
      "start_date": "2026-01-01",
      "end_date": "2026-01-31"
    }
  }
}
'

import requests

url = "https://api.creditor.younegotiate.com/communications/groups/preview"

payload = {
    "subclient_id": "master",
    "file_upload_history_id": "all",
    "consumer_state": "not_viewed_offer",
    "custom_rules": { "placement_date": {
            "start_date": "2026-01-01",
            "end_date": "2026-01-31"
        } }
}
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({
    subclient_id: 'master',
    file_upload_history_id: 'all',
    consumer_state: 'not_viewed_offer',
    custom_rules: {placement_date: {start_date: '2026-01-01', end_date: '2026-01-31'}}
  })
};

fetch('https://api.creditor.younegotiate.com/communications/groups/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.creditor.younegotiate.com/communications/groups/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([
    'subclient_id' => 'master',
    'file_upload_history_id' => 'all',
    'consumer_state' => 'not_viewed_offer',
    'custom_rules' => [
        'placement_date' => [
                'start_date' => '2026-01-01',
                'end_date' => '2026-01-31'
        ]
    ]
  ]),
  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.creditor.younegotiate.com/communications/groups/preview"

	payload := strings.NewReader("{\n  \"subclient_id\": \"master\",\n  \"file_upload_history_id\": \"all\",\n  \"consumer_state\": \"not_viewed_offer\",\n  \"custom_rules\": {\n    \"placement_date\": {\n      \"start_date\": \"2026-01-01\",\n      \"end_date\": \"2026-01-31\"\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.creditor.younegotiate.com/communications/groups/preview")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"subclient_id\": \"master\",\n  \"file_upload_history_id\": \"all\",\n  \"consumer_state\": \"not_viewed_offer\",\n  \"custom_rules\": {\n    \"placement_date\": {\n      \"start_date\": \"2026-01-01\",\n      \"end_date\": \"2026-01-31\"\n    }\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.creditor.younegotiate.com/communications/groups/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  \"subclient_id\": \"master\",\n  \"file_upload_history_id\": \"all\",\n  \"consumer_state\": \"not_viewed_offer\",\n  \"custom_rules\": {\n    \"placement_date\": {\n      \"start_date\": \"2026-01-01\",\n      \"end_date\": \"2026-01-31\"\n    }\n  }\n}"

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

{
  "data": {
    "total_count": 10,
    "total_balance": 1250.5,
    "total_balance_label": "$1,250.50"
  }
}

{
  "message": "<string>"
}

{
  "message": "An active membership is required."
}

{
  "message": "<string>",
  "errors": {}
}