{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948967,-0.315376,0.000000,0.000000,0.175935,-0.529391,0.829935,0.000000,-0.261192,0.785929,0.560441,0.000000,-1667674.170362,5018039.643045,3554381.563135,1],    "boundingVolume": {    "region": [1.891601,0.594823,1.891696,0.595014,0.000000,8.573899]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/28_1076407.b3dm"}}}