{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950365,-0.311137,0.000000,0.000000,0.173655,-0.530426,0.829755,0.000000,-0.257626,0.786914,0.560710,0.000000,-1644902.712146,5024334.317988,3556088.472731,1],    "boundingVolume": {    "region": [1.887136,0.595185,1.887236,0.595301,0.000000,8.655827]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_1345540.b3dm"}}}