{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950271,-0.311425,0.000000,0.000000,0.173925,-0.530708,0.829517,0.000000,-0.257790,0.786609,0.561063,0.000000,-1645952.403097,5022392.978312,3558329.314774,1],    "boundingVolume": {    "region": [1.887439,0.595611,1.887539,0.595727,0.000000,8.820970]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/12_1428390.b3dm"}}}