New to Rest API - Schedule Campaign

Sanford, not 100% what you are looking for. I have basically copied what is recommended from the Schedule Campaign API page for PHP and uploaded this to one of our servers and accessed the URL. Not sure if we aren't connecting something corretly or what.

<?php
$request = new ScheduleCampaign();
$request->id = 1001;
$token1 = new stdClass();
$token1->name = "{{my.token}}";
$token1->value = "Hello World!";
$request->tokens = array($token1);
print_r($request->postData());
class ScheduleCampaign{
     private $host = "CHANGE ME";
     private $clientId = "CHANGE ME";
     private $clientSecret = "CHANGE ME";
     public $id;//id of campaign to schedule
     public $runAt;//dateTime to run campaign
     public $cloneToProgramName;//if set will clone program with name
     public $tokens;//array of stdClass objects with two members, name and value
     
     public function postData(){
          $url = $this->host . "/rest/v1/campaigns/" . $this->id . "/schedule.json?access_token=" . $this->getToken();
          $ch = curl_init($url);
          $requestBody = $this->bodyBuilder();
          print_r($requestBody);
          curl_setopt($ch,  CURLOPT_RETURNTRANSFER, 1);
          curl_setopt($ch, CURLOPT_HTTPHEADER, array('accept: application/json','Content-Type: application/json'));
          curl_setopt($ch, CURLOPT_POST, 1);
          curl_setopt($ch, CURLOPT_POSTFIELDS, $requestBody);
          curl_getinfo($ch);
          $response = curl_exec($ch);
          return $response;
     }
     
     private function getToken(){
          $ch = curl_init($this->host . "/identity/oauth/token?grant_type=client_credentials&client_id=" . $this->clientId . "&client_secret=" . $this->clientSecret);
          curl_setopt($ch,  CURLOPT_RETURNTRANSFER, 1);
          curl_setopt($ch, CURLOPT_HTTPHEADER, array('accept: application/json',));
          $response = json_decode(curl_exec($ch));
          curl_close($ch);
          $token = $response->access_token;
          return $token;
     }
     private function bodyBuilder(){
          $body = new stdClass();
          $body->input = new stdClass();
          if (isset($this->runAt)){
               $body->input->runAt = $this->runAt;
          }
          if (isset($this->cloneToProgramName)){
               $body->input->cloneToProgramName = $this->cloneToProgramName;
          }
          if (isset($this->tokens)){
               $body->input->tokens = $this->tokens;
          }
          $json = json_encode($body);
          return $json;
     }     
}