chromium/chrome/test/data/extensions/api_test/settings/managed_storage/schema.json

{
  "type": "object",
  "properties": {
    "string-policy": { "type": "string" },
    "string-enum-policy": {
      "type": "string",
      "enum": ["value-1", "value-2", "value-3"]
    },
    "another-string-policy": { "type": "string" },
    "int-policy": { "type": "integer" },
    "int-enum-policy": {
      "type": "integer",
      "enum": [0, 1, 2]
    },
    "double-policy": { "type": "number" },
    "boolean-policy": { "type": "boolean" },
    "list-policy": {
      "type": "array",
      "items": { "type": "string" }
    },
    "dict-policy": {
      "type": "object",
      "properties": {
        "list": {
          "type": "array",
          "items": {
            "type": "object",
            "additionalProperties": { "type": "integer" }
          }
        }
      }
    }
  }
}