{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950707,-0.310092,0.000000,0.000000,0.173334,-0.531424,0.829183,0.000000,-0.256581,0.786649,0.561559,0.000000,-1638239.011123,5022662.113340,3561486.319817,1],    "boundingVolume": {    "region": [1.886037,0.596220,1.886134,0.596319,0.000000,8.773119]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/1/2_1427574.b3dm"}}}