{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950693,-0.310135,0.000000,0.000000,0.173098,-0.530617,0.829749,0.000000,-0.256794,0.787179,0.560719,0.000000,-1639591.066741,5026029.784877,3556145.176263,1],    "boundingVolume": {    "region": [1.886073,0.595197,1.886189,0.595311,0.000000,8.675266]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/8_1450403.b3dm"}}}