curl --request POST \
  --url https://your-instance.example.com/api/contacts \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "page": {
    "New Lead": 1,
    "Qualified": 1
  },
  "size": 25,
  "search": "jane",
  "ownerFilter": "my",
  "pipelineType": "Contact",
  "pipelineId": "64f0a1b2c3d4e5f6a7b8c9d1"
}
'

import requests

url = "https://your-instance.example.com/api/contacts"

payload = {
    "page": {
        "New Lead": 1,
        "Qualified": 1
    },
    "size": 25,
    "search": "jane",
    "ownerFilter": "my",
    "pipelineType": "Contact",
    "pipelineId": "64f0a1b2c3d4e5f6a7b8c9d1"
}
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({
    page: {'New Lead': 1, Qualified: 1},
    size: 25,
    search: 'jane',
    ownerFilter: 'my',
    pipelineType: 'Contact',
    pipelineId: '64f0a1b2c3d4e5f6a7b8c9d1'
  })
};

fetch('https://your-instance.example.com/api/contacts', 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://your-instance.example.com/api/contacts",
  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([
    'page' => [
        'New Lead' => 1,
        'Qualified' => 1
    ],
    'size' => 25,
    'search' => 'jane',
    'ownerFilter' => 'my',
    'pipelineType' => 'Contact',
    'pipelineId' => '64f0a1b2c3d4e5f6a7b8c9d1'
  ]),
  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://your-instance.example.com/api/contacts"

	payload := strings.NewReader("{\n  \"page\": {\n    \"New Lead\": 1,\n    \"Qualified\": 1\n  },\n  \"size\": 25,\n  \"search\": \"jane\",\n  \"ownerFilter\": \"my\",\n  \"pipelineType\": \"Contact\",\n  \"pipelineId\": \"64f0a1b2c3d4e5f6a7b8c9d1\"\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://your-instance.example.com/api/contacts")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"page\": {\n    \"New Lead\": 1,\n    \"Qualified\": 1\n  },\n  \"size\": 25,\n  \"search\": \"jane\",\n  \"ownerFilter\": \"my\",\n  \"pipelineType\": \"Contact\",\n  \"pipelineId\": \"64f0a1b2c3d4e5f6a7b8c9d1\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://your-instance.example.com/api/contacts")

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  \"page\": {\n    \"New Lead\": 1,\n    \"Qualified\": 1\n  },\n  \"size\": 25,\n  \"search\": \"jane\",\n  \"ownerFilter\": \"my\",\n  \"pipelineType\": \"Contact\",\n  \"pipelineId\": \"64f0a1b2c3d4e5f6a7b8c9d1\"\n}"

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

{
  "data": {
    "New Lead": {
      "contacts": [],
      "total": 12
    },
    "Qualified": {
      "contacts": [],
      "total": 4
    }
  },
  "stageIdByName": {
    "New Lead": "64f0a1b2c3d4e5f6a7b8c9d2"
  }
}

{
  "error": "Attachment not found",
  "message": "Attachment not found"
}

{
  "error": "Attachment not found",
  "message": "Attachment not found"
}