{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950757,-0.309936,0.000000,0.000000,0.173159,-0.531183,0.829374,0.000000,-0.256512,0.786874,0.561276,0.000000,-1637794.904691,5024090.285498,3559687.842560,1],    "boundingVolume": {    "region": [1.885849,0.595817,1.885995,0.596037,0.000000,8.584499]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/13_1339909.b3dm"}}}