{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950339,-0.311217,0.000000,0.000000,0.173696,-0.530401,0.829762,0.000000,-0.257694,0.786899,0.560699,0.000000,-1645340.203123,5024239.846261,3556020.017052,1],    "boundingVolume": {    "region": [1.887220,0.595172,1.887320,0.595288,0.000000,8.778256]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_1454163.b3dm"}}}