curl --request POST \
  --url https://cc.nadcab.com/api/v1/account/setOauthIpTables \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/x-www-form-urlencoded' \
  --data 'oauthIptables=127.0.0.1\n127.0.0.2\n127.0.0.3'

const options = {
  method: 'POST',
  headers: {
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/x-www-form-urlencoded'
  },
  body: new URLSearchParams({oauthIptables: '127.0.0.1\n127.0.0.2\n127.0.0.3'})
};

fetch('https://cc.nadcab.com/api/v1/account/setOauthIpTables', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://cc.nadcab.com/api/v1/account/setOauthIpTables"

payload = { "oauthIptables": "127.0.0.1\n127.0.0.2\n127.0.0.3" }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/x-www-form-urlencoded"
}

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

print(response.text)

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://cc.nadcab.com/api/v1/account/setOauthIpTables",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => "oauthIptables=127.0.0.1%5Cn127.0.0.2%5Cn127.0.0.3",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/x-www-form-urlencoded"
  ],
]);

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

curl_close($curl);

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

{
  "code": 200,
  "msg": "success",
  "data": true
}