{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950351,-0.311179,0.000000,0.000000,0.173866,-0.530992,0.829348,0.000000,-0.257532,0.786514,0.561314,0.000000,-1644311.829535,5021789.707872,3559928.102086,1],    "boundingVolume": {    "region": [1.887180,0.595914,1.887279,0.596031,0.000000,8.806958]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1342787.b3dm"}}}