{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950522,-0.310657,0.000000,0.000000,0.173743,-0.531604,0.828982,0.000000,-0.256986,0.786304,0.561858,0.000000,-1640824.527571,5020463.966980,3563382.096144,1],    "boundingVolume": {    "region": [1.886631,0.596580,1.886729,0.596679,0.000000,15.223519]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/6_1393313.b3dm"}}}