{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950576,-0.310492,0.000000,0.000000,0.115053,-0.352235,0.928813,0.000000,-0.288121,0.882089,0.372701,0.000000,-1838532.667580,5628699.221785,2362321.760077,1],    "boundingVolume": {    "region": [1.886483,0.381911,1.886531,0.381925,0.000000,5.241121]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/6/20.b3dm"}}}