{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950210,-0.311609,0.000000,0.000000,0.173759,-0.529854,0.830098,0.000000,-0.258124,0.787114,0.560199,0.000000,-1648081.568504,5025604.235316,3552842.555568,1],    "boundingVolume": {    "region": [1.887600,0.594561,1.887764,0.594692,0.000000,8.703297]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1375710.b3dm"}}}