{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.871382,-0.490606,0.000000,0.000000,0.211776,-0.376143,0.902035,0.000000,-0.441987,0.785028,0.434025,0.000000,-2820833.580888,5010178.728556,2751475.324739,1],    "boundingVolume": {    "region": [2.083525,0.448916,2.083637,0.448996,0.000000,30.477902]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/3/2/1_221070.b3dm"}}}