return {
  version = "1.1",
  luaversion = "5.1",
  orientation = "orthogonal",
  width = 25,
  height = 15,
  tilewidth = 32,
  tileheight = 32,
  backgroundcolor = { 128, 128, 128, 0 },
  properties = {},
  tilesets = {
    {
      name = "base",
      firstgid = 1,
      tilewidth = 32,
      tileheight = 32,
      spacing = 0,
      margin = 0,
      image = "border.bmp",
      imagewidth = 32,
      imageheight = 32,
      tileoffset = {
        x = 0,
        y = 0
      },
      properties = {},
      tiles = {}
    }
  },
  layers = {
    {
      type = "tilelayer",
      name = "Tile Layer 1",
      x = 0,
      y = 0,
      width = 25,
      height = 15,
      visible = true,
      opacity = 1,
      properties = {},
      encoding = "lua",
      data = {
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      }
    }
  }
}