{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950030,-0.312157,0.000000,0.000000,0.174232,-0.530264,0.829737,0.000000,-0.258464,0.786620,0.560736,0.000000,-1650259.512767,5022458.072699,3556255.885203,1],    "boundingVolume": {    "region": [1.888177,0.595209,1.888341,0.595340,0.000000,8.820528]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/12_1456743.b3dm"}}}