{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950500,-0.310723,0.000000,0.000000,0.173727,-0.531431,0.829096,0.000000,-0.257076,0.786396,0.561688,0.000000,-1641402.793134,5021044.484530,3562304.931010,1],    "boundingVolume": {    "region": [1.886701,0.596375,1.886799,0.596474,0.000000,8.782471]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/4_1388935.b3dm"}}}