איך מתחילים להפעיל את ההגדרה 'פעילות בשידור חי'

"message":{
    "token": "<fcm_token:test>",
    "apns":{
      "live_activity_token": "<live_activity_push_to_start_token>",
      "headers":{
        "apns-priority": "10"
      },
      "payload":{
        "aps": {
          "timestamp": <timestamp>,
          "event": "start",
          "content-state": {
            "demo": 1
          },
          "attributes-type": "DemoAttributes",
          "attributes": {
            "demoAttribute": 1,
          },
          "alert": {
            "title": "test title",
            "body": "test body"
          }
        }
      }
    }
  }

"message":{
    "token": "<fcm_token:test>",
    "apns":{
      "live_activity_token": "<live_activity_push_token>",
      "headers":{
        "apns-priority": "10"
      },
      "payload":{
        "aps": {
          "timestamp": <timestamp>,
          "event": "update",
          "content-state": {
            "test1": 100,
            "test2": "demo"
          },
          "alert": {
            "title": "test title",
            "body": "test body"
          }
        }
      }
    }
  }
}

"message":{
     "token": "<fcm_token:test>",
    "apns":{
      "live_activity_token": "<live_activity_push_token>",
      "headers":{
        "apns-priority": "10"
      },
      "payload":{
        "aps": {
          "timestamp": <timestamp>,
          "dismissal-date": <dismissal_date>,
          "event": "end",
          "content-state": {
            "test1": 100,
            "test2": "demo"
          },
          "alert": {
            "title": "test title",
            "body": "test body"
          }
        }
      }
    }
  }
}