rules.json

[
  {
    "id": 1,
    "priority": 1,
    "action": {
      "type": "modifyHeaders",
      "requestHeaders": [
        {
          "header": "User-Agent",
          "operation": "set",
          "value": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36 Edg/110.0.1587.61"
        }
      ]
    },
    "condition": {
      "regexFilter": ".*bing\\.com.*",
      "resourceTypes": ["main_frame"]
    }
  }
]