{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950375,-0.311108,0.000000,0.000000,0.173605,-0.530329,0.829827,0.000000,-0.257624,0.786991,0.560602,0.000000,-1644889.729025,5024825.571918,3555404.901065,1],    "boundingVolume": {    "region": [1.887105,0.595055,1.887204,0.595172,0.000000,8.819856]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/5/7_1453300.b3dm"}}}