gistfile1.php

<?php
 
$url ="https://arion.nationbuilder.com/api/v1/imports?access_token=d80bd609b7634d77fb6f38a444cfb093da6c596c98b49fc0099ff8864e30d8b8";
 
$data = array(
  "import" => array(
    "file" => "aWQsZmlyc3RfbmFtZSxsYXN0X25hbWUNCjEsQnlyb24sQW5kZXJzb24", 
    "type" => "people",
    "is_overwritable" => true
  )
);
 
$ch = curl_init($url);
 
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST'); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); 
curl_setopt($ch, CURLOPT_TIMEOUT, '10'); 
curl_setopt($ch, CURLOPT_HTTPHEADER, 
 
array("Content-Type: application/json","Accept: application/json"));
 
$json_data = json_encode($data);
curl_setopt($ch, CURLOPT_POSTFIELDS, $json_data);
 
$json_response = curl_exec($ch);
curl_close($ch);
 
$response = json_decode($json_response, true);
 
print_r($response);
 
?>