Webhook: Unable to Fetch POST Data from Form Fields

<?php
/* From forum post: */
$customerPhone = implode('', $obj["q281_primaryPhone"]);

$customerName = implode('', $obj['q241_fullName']);

$token = "?token=V5E6dEyuv4nw3HFD98fUF6N8rQWhX3";

$parameters = $token . "&name=" . $customerName . "&phone=" . $customerPhone . "&size=1";

$emailfrom = "admin@*****.com"; //Sender, replace with your email
$emailto = "jesse@****.com"; //Recipient, replace with receivers email
$subject = "JotForm Test Webhook"; //Email Subject

//Send email

mail($emailto, $subject, $parameters, "From: <$emailfrom>");

//---------------------------------------------------------------------------------------------
/* --- what should be placed --- - if you want to get the email */

$result = $_REQUEST['rawRequest'];

$result = stripslashes($result);
$obj = json_decode($result, true);

$emailfrom = "admin@*****.com"; //Sender, replace with your email
$emailto = "jesse@****.com"; //Recipient, replace with receivers email
$subject = "JotForm Test Webhook"; //Email Subject

//Prepare email body text, you can change anything from here

$body = "Contact Form Submissions"; //Title
$body .= "n";  //Nothing but new line
$body .= "Name: ". implode(' ', $obj['q247_fullName247']); // to change full name array to string
$body .= "n";  //Nothing but new line
$body .= "n";
$body .= "Email: ". $obj['q250_emailAddress']; //Replace with your Email field name
$body .= "n";
$body .= "Reason for Visit: ". $obj['q277_reasonFor'];
$body .= "n";
$body .= "Submissions ID: ". $_POST['submissionID']; //If you'd like to catch submissionsID

//Send email
mail($emailto, $subject, $body, "From: <$emailfrom>");

//------------------------------------------------------------------
// Now if you want to have the submitted data prepared as some form of parameters then you should modify the code to something like this:
$result = $_REQUEST['rawRequest'];

$result = stripslashes($result);
$obj = json_decode($result, true);

//We can only now use the $obj variable, in your script (all the way at the top), we did not have it declared..
$customerPhone = implode('', $obj["q281_primaryPhone"]);
$customerName = implode('', $obj['q241_fullName']);

$token = "?token=V5E6dEyuv4nw3HFD98fUF6N8rQWhX3";

$parameters = $token . "&name=" . $customerName . "&phone=" . $customerPhone . "&size=1";

?>