{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950252,-0.311482,0.000000,0.000000,0.173956,-0.530694,0.829520,0.000000,-0.257837,0.786596,0.561059,0.000000,-1646258.138961,5022310.529727,3558304.418012,1],    "boundingVolume": {    "region": [1.887499,0.595606,1.887598,0.595723,0.000000,8.820970]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/12_1428361.b3dm"}}}