Unblock Emails from Recipient Group

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,"https://insprl.com/api/email/recipient-groups/unblock-emails");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, 
   array( 'Authorization: {CLIENT_KEY}'
));
curl_setopt($ch, CURLOPT_POSTFIELDS, 
http_build_query(
array(
   'client_id'	=> '{CLIENT_ID}',
   'groupslug'	=> "valuable-customers",
   'emails'	=> 'customer1@example.com, customer2@example.com',
)
));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close ($ch);

{
"code":"100",
"message":"success",
"data":{
   "status":"unblocked",
   "msg":"2 email(s) unblocked successfully"
}
}