{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950341,-0.311211,0.000000,0.000000,0.173695,-0.530410,0.829756,0.000000,-0.257687,0.786895,0.560708,0.000000,-1645296.088509,5024214.202853,3556076.279645,1],    "boundingVolume": {    "region": [1.887214,0.595182,1.887313,0.595299,0.000000,8.778256]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_1454225.b3dm"}}}