generate private key

<?php
//Requires libcurl

$curl = curl_init();

$payload = array(
  "index" => 0,
  "mnemonic" => "urge pulp usage sister evidence arrest palm math please chief egg abuse"
);

curl_setopt_array($curl, [
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-key: YOUR_API_KEY"
  ],
  CURLOPT_POSTFIELDS => json_encode($payload),
  CURLOPT_URL => "https://api-eu1.tatum.io/v3/bitcoin/wallet/priv",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_CUSTOMREQUEST => "POST",
]);

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

curl_close($curl);

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