{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950317,-0.311282,0.000000,0.000000,0.173730,-0.530383,0.829766,0.000000,-0.257749,0.786885,0.560693,0.000000,-1645691.993720,5024153.088062,3555980.076208,1],    "boundingVolume": {    "region": [1.887289,0.595164,1.887388,0.595281,0.000000,8.688473]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/8_1454129.b3dm"}}}