Need to get world borders data (JSON)

Hey, i need an endpoint that i can use to retrieve border data, or a resource that i can use to convert border data into roblox. I already have city data, but i need border data to make it complete. An example of what i would like would be this:

{
    CountryName = "Poland",
    CountryAcronym = "PL"
    BorderPoints = { -- (I can use these to construct lines, think of them like verticies)
    -- Then in here each province has its own data, when pieced together makes the entire border of the country. For example:
         Warsaw = {
             Vector3.new(5,0,2),
              Vector3.new(1,0,7),
              Vector3.new(1,0,14),
              Vector3.new(14,0,2),
          },
    
         Krakow = {
             Vector3.new(2,0,5),
             Vector3.new(5,0,5),
             Vector3.new(2,0,10),
             Vector3.new(15,0,2),
          },
    -- etc etc
    },
}

Ive seen games map out borders before in extremely complete fashion, so either theyve used a resource, or made it from scratch (god help me). I understand this is a complex request, but id love to see an answer! Thanks.