{
  "surface_id": "surface-photo-input-preview",
  "surface_version": 1,
  "payload": {
    "objects": [
      {
        "dataModelUpdate": {
          "surfaceId": "surface-photo-input-preview",
          "contents": [
            {
              "key": "photoUrl",
              "valueString": "https://oss-macaron-system.macaron.im/image/a2ui_card/photo.jpg"
            },
            {
              "key": "hasPhoto",
              "valueBool": true
            },
            {
              "key": "isPhotoUploading",
              "valueBool": true
            }
          ]
        }
      },
      {
        "surfaceUpdate": {
          "surfaceId": "surface-photo-input-preview",
          "components": [
            {
              "id": "root",
              "component": {
                "PhotoInput": {
                  "value": {
                    "path": "/photoUrl"
                  },
                  "hasValue": {
                    "path": "/hasPhoto"
                  },
                  "isUploading": {
                    "path": "/isPhotoUploading"
                  },
                  "placeholder": {
                    "literalString": "Snap a pic"
                  }
                }
              }
            }
          ]
        }
      },
      {
        "beginRendering": {
          "root": "root",
          "surfaceId": "surface-photo-input-preview"
        }
      }
    ]
  }
}