{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950736,-0.310001,0.000000,0.000000,0.173043,-0.530703,0.829705,0.000000,-0.256670,0.787174,0.560784,0.000000,-1638799.189761,5025995.479426,3556555.882880,1],    "boundingVolume": {    "region": [1.885933,0.595275,1.886049,0.595389,0.000000,8.731404]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_1345373.b3dm"}}}