{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950542,-0.310596,0.000000,0.000000,0.173324,-0.530439,0.829815,0.000000,-0.257196,0.787119,0.560620,0.000000,-1642158.950184,5025639.668507,3555515.834258,1],    "boundingVolume": {    "region": [1.886525,0.595061,1.886707,0.595207,0.000000,8.781427]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/15_1449774.b3dm"}}}