{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858237,-0.513253,0.000000,0.000000,0.262486,-0.438916,0.859334,0.000000,-0.440278,0.736211,0.513954,0.000000,-2810639.358409,4699812.619796,3259005.727845,1],    "boundingVolume": {    "region": [2.109685,0.539725,2.109850,0.539850,0.000000,52.491300]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/2_306973.b3dm"}}}