{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948873,-0.315657,0.000000,0.000000,0.116725,-0.350878,0.929118,0.000000,-0.293012,0.880801,0.371932,0.000000,-1869734.020062,5620473.611246,2357445.141748,1],    "boundingVolume": {    "region": [1.891861,0.380984,1.892029,0.381195,0.000000,6.597802]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/8_68548.b3dm"}}}