{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "resource": {
      "type": "object",
      "properties": {
        "kind": {
          "type": "string",
          "const": "offer"
        },
        "id": {
          "type": "string",
          "minLength": 1,
          "maxLength": 100,
          "pattern": "^[a-zA-Z0-9_-]+$"
        },
        "key": {
          "anyOf": [
            {
              "type": "string",
              "minLength": 1,
              "maxLength": 100,
              "pattern": "^[a-zA-Z0-9_-]+$"
            },
            {
              "type": "null"
            }
          ]
        },
        "title": {
          "type": "string"
        },
        "archivedAt": {
          "anyOf": [
            {
              "type": "integer",
              "minimum": 0,
              "maximum": 9007199254740991
            },
            {
              "type": "null"
            }
          ]
        }
      },
      "required": ["kind", "id", "key", "title", "archivedAt"]
    },
    "changed": {
      "type": "boolean"
    }
  },
  "required": ["resource", "changed"]
}