{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950208,-0.311615,0.000000,0.000000,0.174163,-0.531075,0.829232,0.000000,-0.257857,0.786284,0.561486,0.000000,-1646387.481717,5020330.364883,3561019.553698,1],    "boundingVolume": {    "region": [1.887620,0.596076,1.887758,0.596285,0.000000,8.813532]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/3/1/2_1431962.b3dm"}}}