{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950520,-0.310664,0.000000,0.000000,0.173744,-0.531594,0.828988,0.000000,-0.256994,0.786308,0.561848,0.000000,-1640876.322891,5020489.361657,3563322.865596,1],    "boundingVolume": {    "region": [1.886639,0.596569,1.886737,0.596668,0.000000,11.067005]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/6_1328884.b3dm"}}}