{
"apiKey": string,
"size": [number, number],
optional "scale": number,
optional "format": (
"png8"
or "png"
or "png32"
or "gif"
or "jpg"
or "jpg-baseline"
),
optional "mapType": ("roadmap" or "satellite" or "hybrid" or "terrain"),
optional "language": string,
optional "region": string
}