{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950428,-0.310944,0.000000,0.000000,0.173549,-0.530469,0.829749,0.000000,-0.257463,0.786961,0.560718,0.000000,-1643868.034322,5024635.129559,3556141.540221,1],    "boundingVolume": {    "region": [1.886932,0.595195,1.887032,0.595312,0.000000,8.812789]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/8_1450398.b3dm"}}}