{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858440,-0.512914,0.000000,0.000000,0.262692,-0.439655,0.858892,0.000000,-0.439759,0.736003,0.514696,0.000000,-2807332.571698,4698494.928080,3263720.664051,1],    "boundingVolume": {    "region": [2.109291,0.540590,2.109455,0.540716,0.000000,26.278633]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/9_273682.b3dm"}}}