PHP - Enviar Mensajes a Whastapp a traves de PHP o JAVASCRIPT

<?php

$datosAPI = new stdClass();

$DATOS = array();

array_push($DATOS, array(

    'numero' => "584129999999",

    'mensaje' => "Hola Juan"

));

$datosAPI->operacion = "registermessage";

$datosAPI->token_qr = "Iido4futCYcCGjA="; //=> TOKEN que se le otorga en esta pagina https://grupozucol.com/whatsapp/qr

$datosAPI->codeAPI = "42a136749c623570eb9b"; //=> Clave unica revocable (la otorgo yo)

$datosAPI->mensajes = $DATOS;

$json = json_encode($datosAPI, true);

$url = 'https://0i2hx3p2g2.execute-api.us-east-2.amazonaws.com/dev/whatsapp';

$headers = array("Content-Type:application/json");

$curl = curl_init();

curl_setopt_array($curl, array(

    CURLOPT_URL => $url,

    CURLOPT_TIMEOUT => 30,

    CURLOPT_POST => 1,

    CURLOPT_RETURNTRANSFER => 1,

    CURLOPT_HTTPHEADER => $headers,

    CURLOPT_POSTFIELDS => $json,

    CURLOPT_SSL_VERIFYPEER => false

));

$json_returned = curl_exec($curl);

echo $json_returned;

//echo json_encode($json_returned, true);

if ($error = curl_error($curl)) {

    die('cURL error:' . $error);

}

curl_close($curl);