{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950740,-0.309989,0.000000,0.000000,0.173221,-0.531272,0.829304,0.000000,-0.256534,0.786793,0.561380,0.000000,-1637935.868866,5023575.033599,3560345.669776,1],    "boundingVolume": {    "region": [1.885905,0.595942,1.886050,0.596162,0.000000,8.817084]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/13_1422764.b3dm"}}}