{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950341,-0.311210,0.000000,0.000000,0.173885,-0.530991,0.829345,0.000000,-0.257557,0.786502,0.561319,0.000000,-1644471.820486,5021716.120842,3559957.803536,1],    "boundingVolume": {    "region": [1.887213,0.595920,1.887312,0.596037,0.000000,8.806958]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1430331.b3dm"}}}