{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949859,-0.312678,0.000000,0.000000,0.115211,-0.349989,0.929642,0.000000,-0.290413,0.882219,0.370607,0.000000,-1853143.026082,5629503.952312,2349040.079623,1],    "boundingVolume": {    "region": [1.888739,0.379572,1.888877,0.379754,0.000000,10.318123]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_73173.b3dm"}}}