payload

{
    "to": "/topics/red",
    "content_available": true,
    "mutable_content": true,
    "notification": {
        "badge": 9,
        "title": "awd4",
        "mutable-content": true,
        "body": "bod",
        "image_url": "https://www.imgonline.com.ua/examples/jpeg-quality-10.jpg"
    },
    "image_url": "https://www.imgonline.com.ua/examples/jpeg-quality-10.jpg",
    "priority": "high"
}