{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950342,-0.311207,0.000000,0.000000,0.173883,-0.530992,0.829345,0.000000,-0.257555,0.786503,0.561319,0.000000,-1644454.202805,5021720.685479,3559959.491423,1],    "boundingVolume": {    "region": [1.887209,0.595920,1.887309,0.596037,0.000000,8.806958]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1342753.b3dm"}}}