{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950347,-0.311191,0.000000,0.000000,0.173683,-0.530410,0.829759,0.000000,-0.257671,0.786903,0.560704,0.000000,-1645194.704181,5024265.536538,3556050.829955,1],    "boundingVolume": {    "region": [1.887193,0.595177,1.887292,0.595294,0.000000,8.778256]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_1454192.b3dm"}}}