Hello,
does anyone know a way to download a specific map and play or edit it locally?

Example: https://socialclub.rockstargames.com/job/gtav/sSz-xTQ2fUOVWHnC3OW-OA

Unfortunately, the API (scapi.rockstargames.com/ugc/mission/details?title=gtav&contentId=ID) is not so helpful because the Z coordinates are missing.
I ask because there are already maps from the online mode.
Example: https://de.gta5-mods.com/maps/gta-online-stunt-races-map-editor-menyoo