{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950362,-0.311147,0.000000,0.000000,0.173661,-0.530427,0.829753,0.000000,-0.257633,0.786909,0.560713,0.000000,-1644949.414503,5024305.412510,3556107.580892,1],    "boundingVolume": {    "region": [1.887146,0.595188,1.887246,0.595305,0.000000,8.778256]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_1454288.b3dm"}}}