curl --request POST \
  --url https://api.hubapi.com/companies/v2/domains/{domain}/companies \
  --header 'Content-Type: application/json' \
  --data '
{
  "limit": 123,
  "requestOptions": {
    "properties": [
      "<string>"
    ]
  },
  "offset": {
    "isPrimary": true,
    "companyId": 123
  }
}
'

import requests

url = "https://api.hubapi.com/companies/v2/domains/{domain}/companies"

payload = {
    "limit": 123,
    "requestOptions": { "properties": ["<string>"] },
    "offset": {
        "isPrimary": True,
        "companyId": 123
    }
}
headers = {"Content-Type": "application/json"}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    limit: 123,
    requestOptions: {properties: ['<string>']},
    offset: {isPrimary: true, companyId: 123}
  })
};

fetch('https://api.hubapi.com/companies/v2/domains/{domain}/companies', 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.hubapi.com/companies/v2/domains/{domain}/companies",
  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([
    'limit' => 123,
    'requestOptions' => [
        'properties' => [
                '<string>'
        ]
    ],
    'offset' => [
        'isPrimary' => true,
        'companyId' => 123
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "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.hubapi.com/companies/v2/domains/{domain}/companies"

	payload := strings.NewReader("{\n  \"limit\": 123,\n  \"requestOptions\": {\n    \"properties\": [\n      \"<string>\"\n    ]\n  },\n  \"offset\": {\n    \"isPrimary\": true,\n    \"companyId\": 123\n  }\n}")

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

	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.hubapi.com/companies/v2/domains/{domain}/companies")
  .header("Content-Type", "application/json")
  .body("{\n  \"limit\": 123,\n  \"requestOptions\": {\n    \"properties\": [\n      \"<string>\"\n    ]\n  },\n  \"offset\": {\n    \"isPrimary\": true,\n    \"companyId\": 123\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.hubapi.com/companies/v2/domains/{domain}/companies")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"limit\": 123,\n  \"requestOptions\": {\n    \"properties\": [\n      \"<string>\"\n    ]\n  },\n  \"offset\": {\n    \"isPrimary\": true,\n    \"companyId\": 123\n  }\n}"

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

[
  {
    "limit": 2,
    "requestOptions": {
      "properties": [
        "domain",
        "createdate",
        "name",
        "hs_lastmodifieddate"
      ]
    },
    "offset": {
      "isPrimary": true,
      "companyId": 0
    }
  },
  {
    "value": "1502872954691",
    "timestamp": 1502872954691,
    "source": "CALCULATED",
    "sourceId": null,
    "versions": [
      {
        "name": "hs_lastmodifieddate",
        "value": "1502872954691",
        "timestamp": 1502872954691,
        "source": "CALCULATED",
        "sourceVid": []
      }
    ]
  },
  {
    "value": "hubspot.com",
    "timestamp": 1457708103847,
    "source": "COMPANIES",
    "sourceId": null,
    "versions": [
      {
        "name": "domain",
        "value": "hubspot.com",
        "timestamp": 1457708103847,
        "source": "COMPANIES",
        "sourceVid": []
      }
    ]
  },
  {
    "value": "Hubspot, Inc.",
    "timestamp": 1457708103906,
    "source": "BIDEN",
    "sourceId": "name",
    "versions": [
      {
        "name": "name",
        "value": "Hubspot, Inc.",
        "timestamp": 1457708103906,
        "sourceId": "name",
        "source": "BIDEN",
        "sourceVid": []
      }
    ]
  },
  {
    "value": "1457708103847",
    "timestamp": 1457708103847,
    "source": "API",
    "sourceId": null,
    "versions": [
      {
        "name": "createdate",
        "value": "1457708103847",
        "timestamp": 1457708103847,
        "source": "API",
        "sourceVid": []
      }
    ]
  },
  {
    "value": "1498644245669",
    "timestamp": 1498644245669,
    "source": "CALCULATED",
    "sourceId": null,
    "versions": [
      {
        "name": "hs_lastmodifieddate",
        "value": "1498644245669",
        "timestamp": 1498644245669,
        "source": "CALCULATED",
        "sourceVid": []
      }
    ]
  },
  {
    "value": "hubspot.com",
    "timestamp": 1490280388204,
    "source": "API",
    "sourceId": null,
    "versions": [
      {
        "name": "domain",
        "value": "hubspot.com",
        "timestamp": 1490280388204,
        "source": "API",
        "sourceVid": []
      }
    ]
  },
  {
    "value": "qweqwe2323",
    "timestamp": 1490280388204,
    "source": "API",
    "sourceId": null,
    "versions": [
      {
        "name": "name",
        "value": "qweqwe2323",
        "timestamp": 1490280388204,
        "source": "API",
        "sourceVid": []
      }
    ]
  },
  {
    "value": "1490280388204",
    "timestamp": 1490280388204,
    "source": "API",
    "sourceId": "API",
    "versions": [
      {
        "name": "createdate",
        "value": "1490280388204",
        "timestamp": 1490280388204,
        "sourceId": "API",
        "source": "API",
        "sourceVid": []
      }
    ]
  },
  {
    "companyId": 418736767,
    "isPrimary": true
  }
]