{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950450,-0.310877,0.000000,0.000000,0.173529,-0.530532,0.829713,0.000000,-0.257397,0.786944,0.560772,0.000000,-1643445.176407,5024528.782923,3556484.915670,1],    "boundingVolume": {    "region": [1.886863,0.595260,1.886962,0.595377,0.000000,8.703896]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/9_1450495.b3dm"}}}