Ejemplo Event Facebook

{
         "event_name": "Purchase",
         "event_time": 1633552688,
         "user_data": {
            "client_ip_address": "192.88.9.9",
            "client_user_agent": "test ua2"
         },
         "custom_data": {
            "value": 50.5,
            "currency": "USD"
         },
         "opt_out": true
      }