{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949414,-0.314027,0.000000,0.000000,0.175406,-0.530315,0.829457,0.000000,-0.259924,0.785842,0.561152,0.000000,-1659581.644962,5017499.499404,3558898.465987,1],    "boundingVolume": {    "region": [1.890179,0.595736,1.890277,0.595818,0.000000,8.783543]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/6_1363895.b3dm"}}}