{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949128,-0.314890,0.000000,0.000000,0.116072,-0.349859,0.929584,0.000000,-0.292448,0.881485,0.370755,0.000000,-1866133.706514,5624817.733248,2349975.310341,1],    "boundingVolume": {    "region": [1.891083,0.379764,1.891191,0.379879,0.000000,65.359440]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/20_76688.b3dm"}}}