{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950447,-0.310886,0.000000,0.000000,0.114381,-0.349687,0.929858,0.000000,-0.288816,0.882973,0.370059,0.000000,-1842951.845992,5634306.731398,2345563.740041,1],    "boundingVolume": {    "region": [1.886847,0.379034,1.886996,0.379112,0.000000,28.799661]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/15_4166.b3dm"}}}