{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950160,-0.311761,0.000000,0.000000,0.173905,-0.530014,0.829965,0.000000,-0.258208,0.786946,0.560397,0.000000,-1648620.907449,5024533.617939,3554097.903713,1],    "boundingVolume": {    "region": [1.887760,0.594799,1.887924,0.594930,0.000000,8.809282]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_1460020.b3dm"}}}