{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950271,-0.311423,0.000000,0.000000,0.173923,-0.530706,0.829519,0.000000,-0.257788,0.786611,0.561060,0.000000,-1645945.453720,5022404.867701,3558315.838827,1],    "boundingVolume": {    "region": [1.887437,0.595608,1.887537,0.595725,0.000000,8.820970]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/12_1428377.b3dm"}}}