{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950750,-0.309959,0.000000,0.000000,0.173248,-0.531409,0.829210,0.000000,-0.256480,0.786711,0.561519,0.000000,-1637595.047150,5023055.724540,3561229.080904,1],    "boundingVolume": {    "region": [1.885874,0.596110,1.886019,0.596330,0.000000,8.796510]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/14_1423382.b3dm"}}}