Help with webhook string length, I need to reduce it

I am having a problem with traccar and my tracker. I am trying to use a webhook with nabucasa, but when I create the webhook it generates with a very large amount of characters (almost always about 208 characters).
My tracker can max out at 152 characters.

How can I decrease the webhook size without using url shorteners on the Internet? I would like to not open another breach to leak data. Also because I’m moving from duckdns to nabucasa.