{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.943990,-0.329974,0.000000,0.000000,0.183991,-0.526362,0.830114,0.000000,-0.273342,0.781978,0.560174,0.000000,-1745246.135089,4992806.650277,3552684.374798,1],    "boundingVolume": {    "region": [1.907064,0.594594,1.907080,0.594598,0.000000,8.612310]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/2/15.b3dm"}}}