{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950622,-0.310350,0.000000,0.000000,0.173634,-0.531853,0.828845,0.000000,-0.256689,0.786256,0.562061,0.000000,-1638931.094134,5020157.834031,3564675.802679,1],    "boundingVolume": {    "region": [1.886275,0.596791,1.886440,0.596960,0.000000,8.802436]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/3/6/4_1396320.b3dm"}}}