{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949031,-0.315184,0.000000,0.000000,0.175962,-0.529827,0.829651,0.000000,-0.260943,0.785710,0.560864,0.000000,-1666086.751774,5016651.598702,3557066.248519,1],    "boundingVolume": {    "region": [1.891378,0.595376,1.891515,0.595482,0.000000,8.811778]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/3_1072224.b3dm"}}}