{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950269,-0.311430,0.000000,0.000000,0.173785,-0.530271,0.829826,0.000000,-0.257890,0.786903,0.560604,0.000000,-1646592.662114,5024262.227636,3555412.712756,1],    "boundingVolume": {    "region": [1.887444,0.595056,1.887544,0.595173,0.000000,8.750799]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/7_1453314.b3dm"}}}