{
    "format": "json",
    "type": "object",
    "title": "Apollo API Starred Tracks Stream Milestones Schema",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "properties": {
        "data": {
            "type": "array",
            "items": {
                "$ref": "#/definitions/Track"
            }
        }
    },
    "required": [
        "data"
    ],
    "definitions": {
        "Track": {
            "type": "object",
            "additionalProperties": true,
            "properties": {
                "isrc": {
                    "$ref": "#/definitions/Isrc"
                },
                "artistId": {
                    "$ref": "#/definitions/ArtistId"
                }
            },
            "required": [
                "isrc",
                "artistId"
            ],
            "title": "Track"
        },
        "Isrc": {
            "type": "string",
            "additionalProperties": false,
            "title": "Isrc",
            "pattern": "^[A-Z]{2}-?\\w{3}-?\\d{2}-?\\d{5}$"
        },
        "ArtistId": {
            "type": "string",
            "additionalProperties": false,
            "title": "ArtistId",
            "pattern": "^GRAS_\\d+$"
        }
    }
}