{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950277,-0.311406,0.000000,0.000000,0.173777,-0.530293,0.829814,0.000000,-0.257866,0.786898,0.560622,0.000000,-1646439.280131,5024230.108497,3555528.351292,1],    "boundingVolume": {    "region": [1.887418,0.595078,1.887518,0.595195,0.000000,8.758932]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/7_1453554.b3dm"}}}