Example PHP file.

example.simple.php

@@ -0,0 +1,21 @@
+<?php
+
+$post = [
+  'list'      => 23,
+  'name'      => 'Subscriber John',
+  'email'     => 'john@subscriber.aa',
+  'activated' => 1
+];
+
+$ch = curl_init('http://hirlevel.sandros.eu/a/subscribe?key=f953d4b526fdffda0d58bcd39fbbab29800f31ec8c6bcff53af359cd6528337e5bda05f3faf3f2beef4fb1cc8eeee906be67d6bc7c4b04af61dfc239d6b079e1');
+curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
+
+// execute!
+$response = curl_exec($ch);
+
+// close the connection
+curl_close($ch);
+
+// lets see
+var_dump($response);