{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950766,-0.309911,0.000000,0.000000,0.172937,-0.530548,0.829826,0.000000,-0.256633,0.787314,0.560604,0.000000,-1638561.927567,5026886.417878,3555413.561824,1],    "boundingVolume": {    "region": [1.885838,0.595058,1.885954,0.595172,0.000000,8.749665]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/6_1448377.b3dm"}}}