{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "type": "object",
  "properties": {
    "fileSize": {
      "type": "number"
    },
    "contentType": {
      "type": "string",
      "maxLength": 1024
    },
    "fileDimensions": {
      "type": "object",
      "properties": {
        "width": {
          "type": "number"
        },
        "height": {
          "type": "number"
        }
      }
    }
  }
}