{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949861,-0.312673,0.000000,0.000000,0.115207,-0.349984,0.929644,0.000000,-0.290408,0.882223,0.370601,0.000000,-1853115.014295,5629529.989732,2349000.048080,1],    "boundingVolume": {    "region": [1.888733,0.379565,1.888871,0.379747,0.000000,10.318123]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_73147.b3dm"}}}