API - not able to track events

Hi there,

I’m using insomnia to test Mixpanel API, and I not being able to track events.

I’m using endpoint: https://api-eu.mixpanel.com/track#live-event (I also tested with https://api.mixpanel.com/track#live-event)

My Json Body is: 

{

    "event": "Testing",
    "properties": {
			"distinct_id": "123",
			 "token": "My_PROJECT_TOKEN"
    }

}

And i’m using in my headers the Authorization with my  username and secret combined to base64

https://prnt.sc/vp5b4u

Now, i’m always getting a 0 in the answer, meaning that something is invalid in the data.

Can someone please help me?

Thanks