{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950150,-0.311794,0.000000,0.000000,0.173923,-0.530008,0.829965,0.000000,-0.258235,0.786937,0.560396,0.000000,-1648794.055999,5024478.956558,3554094.878362,1],    "boundingVolume": {    "region": [1.887795,0.594799,1.887959,0.594930,0.000000,8.809282]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_1460018.b3dm"}}}