{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950737,-0.310000,0.000000,0.000000,0.173038,-0.530690,0.829715,0.000000,-0.256671,0.787183,0.560770,0.000000,-1638810.383049,5026055.483286,3556466.530470,1],    "boundingVolume": {    "region": [1.885932,0.595258,1.886047,0.595372,0.000000,8.731404]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_1345412.b3dm"}}}