COntact form 7 API Integration - wordpress

Question

<?php
// // accept all post data and make array
$data = json_decode(file_get_contents('php://input'), true);
// // get the data from the array
$deal_name = "test";
// $deal_source = isset($data['deal_source']) ? $data['deal_source'] : "";
$contact_first_name = isset($data['yrnamr']) ? $data['yrname'] : "";
// $contact_last_name = isset($data['contact_last_name']) ? $data['contact_last_name'] : "";
$contact_email = isset($data['yremail']) ? $data['yremail'] : "";
$contact_phone = isset($data['telephone']) ? $data['telephone'] : "";
$contact_message = isset($data['yrmessage']) ? $data['yrmessage'] : "";
$data_string = json_encode(array(
"custom_fields" => array(),
"email" => $contact_email,
"first_name" => $contact_first_name,
"last_name" => "WA",
"is_public" => true,
"phone" => $contact_phone
));
$api_key = "d7c85d208c924e489f36ae69e1550570";
$curl = curl_init();
curl_setopt_array($curl, array(
CURLOPT_URL => 'https://app.teamwave.com/api/crm/deals?api_key='.$api_key,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => '',
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 0,
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => 'POST',
CURLOPT_POSTFIELDS =>'{
"custom_fields": {
"27806": {
"$key": 27806,
"field_type": "select",
"key": "source",
"name": "Source",
"options": null,
"position": 1,
"value": "test"
}
},
"currency": 1876589,
"pipeline": 29270,
"stage": 155081,
"title": "Deal Name Dynamic Test 4"
}',
CURLOPT_HTTPHEADER => array(
'Content-Type: application/json'
),
));
$response = curl_exec($curl);
curl_close($curl);
$response = json_decode($response, true);
$deal_id = $response['id'];
$curl = curl_init();
curl_setopt_array($curl, array(
CURLOPT_URL => 'https://app.teamwave.com/api/crm/deals/'.$deal_id.'/link-contact?api_key='.$api_key,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => '',
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 0,
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => 'POST',
CURLOPT_POSTFIELDS =>$data_string,
CURLOPT_HTTPHEADER => array(
'Content-Type: application/json'
),
));
$response = curl_exec($curl);
curl_close($curl);
echo $response;`
I use this code to integrate my contactform7 fields with teamwave crm.The code creates a deal and links it with a contact in the CRM. but the data is not being sent on form submission.
I suspect something is wrong where the contact form 7 fields are dynamically fetched. I am not sure what is wrong...............