curl --request POST \
  --url https://{tenant_domain}/third-party/v1/search/conversations/by-customers \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "channels": "whatsapp,facebook",
  "display_ids": "491711234567,4915777654321",
  "profile_ids": "101,202,303"
}
'

import requests

url = "https://{tenant_domain}/third-party/v1/search/conversations/by-customers"

payload = {
    "channels": "whatsapp,facebook",
    "display_ids": "491711234567,4915777654321",
    "profile_ids": "101,202,303"
}
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({
    channels: 'whatsapp,facebook',
    display_ids: '491711234567,4915777654321',
    profile_ids: '101,202,303'
  })
};

fetch('https://{tenant_domain}/third-party/v1/search/conversations/by-customers', 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://{tenant_domain}/third-party/v1/search/conversations/by-customers",
  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([
    'channels' => 'whatsapp,facebook',
    'display_ids' => '491711234567,4915777654321',
    'profile_ids' => '101,202,303'
  ]),
  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://{tenant_domain}/third-party/v1/search/conversations/by-customers"

	payload := strings.NewReader("{\n  \"channels\": \"whatsapp,facebook\",\n  \"display_ids\": \"491711234567,4915777654321\",\n  \"profile_ids\": \"101,202,303\"\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://{tenant_domain}/third-party/v1/search/conversations/by-customers")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"channels\": \"whatsapp,facebook\",\n  \"display_ids\": \"491711234567,4915777654321\",\n  \"profile_ids\": \"101,202,303\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://{tenant_domain}/third-party/v1/search/conversations/by-customers")

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  \"channels\": \"whatsapp,facebook\",\n  \"display_ids\": \"491711234567,4915777654321\",\n  \"profile_ids\": \"101,202,303\"\n}"

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

{
  "data": [
    {
      "id": 123,
      "folder_id": 123,
      "created_at": "2023-01-01T12:00:00Z",
      "pinned": true,
      "archived": true,
      "snooze_until": "2023-01-01T12:00:00Z",
      "agent": {
        "id": 123,
        "display_id": 4915223567929,
        "name": "John Doe",
        "in_sync": true,
        "healthy": true,
        "unread_conversations_count": 123,
        "bot_id": 123,
        "proxy_email": "<string>",
        "whatsapp": {
          "is_on_biz_app": false,
          "is_missing_funds": false
        }
      },
      "customer": {
        "id": 123,
        "display_id": 4915223567929,
        "canonical_id": "DE.abc123",
        "name": "John Doe",
        "username": "john_doe",
        "profile": {
          "id": 123,
          "name": "John Doe",
          "blocked": true,
          "date_of_birth": "1970-01-01",
          "phone_number": "+4915224367929",
          "email": "jsmith@example.com",
          "address": "<string>",
          "custom_1": "<string>",
          "custom_2": "<string>",
          "custom_3": "<string>",
          "custom_4": "<string>",
          "custom_5": "<string>",
          "created_at": "2023-01-01T12:00:00Z",
          "updated_at": "2023-01-01T12:00:00Z"
        },
        "conversations": [
          {
            "id": 123
          }
        ]
      },
      "user": {
        "id": 123,
        "name": "<string>",
        "email": 123,
        "roles": [
          "<string>"
        ],
        "permissions": [
          "<string>"
        ],
        "has_password": true,
        "has_pin": true,
        "created_at": "2023-01-01T12:00:00Z",
        "updated_at": "2023-01-01T12:00:00Z"
      },
      "latest_message": {
        "id": 123,
        "conversation_id": 123,
        "user_id": 123,
        "contents": [
          "<unknown>"
        ],
        "agent_reaction": "<string>",
        "customer_reaction": "<string>",
        "sent_at": "2023-01-01T12:00:00Z",
        "reference": {},
        "latest_error": {
          "id": 123,
          "message_id": 123,
          "original_message": "<string>",
          "user_friendly_message": "<string>",
          "created_at": "2023-01-01T12:00:00Z"
        },
        "wa_template_id": 123,
        "wa_flow_id": 123
      },
      "latest_customer_message": {
        "id": 123,
        "conversation_id": 123,
        "user_id": 123,
        "contents": [
          "<unknown>"
        ],
        "agent_reaction": "<string>",
        "customer_reaction": "<string>",
        "sent_at": "2023-01-01T12:00:00Z",
        "reference": {},
        "latest_error": {
          "id": 123,
          "message_id": 123,
          "original_message": "<string>",
          "user_friendly_message": "<string>",
          "created_at": "2023-01-01T12:00:00Z"
        },
        "wa_template_id": 123,
        "wa_flow_id": 123
      },
      "last_reply_from": "2023-01-01T12:00:00Z",
      "last_customer_reply_from": "2023-01-01T12:00:00Z",
      "latest_note": {
        "id": 123,
        "conversation_id": 123,
        "text": "<string>",
        "created_at": "2023-01-01T12:00:00Z",
        "updated_at": "2023-01-01T12:00:00Z"
      },
      "unread_customer_messages_count": 123,
      "reply_until": "2023-01-01T12:00:00Z",
      "reply_possible": true,
      "customer_interaction_required": true
    }
  ]
}