{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950351,-0.311179,0.000000,0.000000,0.173684,-0.530437,0.829741,0.000000,-0.257656,0.786890,0.560730,0.000000,-1645094.499241,5024181.755395,3556214.453024,1],    "boundingVolume": {    "region": [1.887180,0.595209,1.887279,0.595325,0.000000,8.627304]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_1345485.b3dm"}}}