{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949419,-0.314012,0.000000,0.000000,0.175551,-0.530780,0.829129,0.000000,-0.259808,0.785532,0.561640,0.000000,-1658840.468037,5015529.610805,3561998.456808,1],    "boundingVolume": {    "region": [1.890162,0.596326,1.890261,0.596407,0.000000,8.185435]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/13_1338175.b3dm"}}}