{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "MetadataItemResponse",
  "description": "Single metadata record.",
  "required": [
    "id",
    "key",
    "value",
    "provider",
    "timestamp"
  ],
  "properties": {
    "id": {
      "description": "Metadata record identifier",
      "type": "integer"
    },
    "key": {
      "description": "Metadata key",
      "type": "string"
    },
    "value": {
      "description": "Metadata value",
      "type": "string",
      "nullable": true
    },
    "provider": {
      "description": "Metadata provider identifier",
      "type": "string"
    },
    "timestamp": {
      "description": "Metadata timestamp",
      "type": "string",
      "format": "date-time"
    }
  },
  "type": "object"
}