{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948948,-0.315433,0.000000,0.000000,0.176019,-0.529533,0.829826,0.000000,-0.261205,0.785809,0.560603,0.000000,-1667759.020252,5017278.577222,3555409.060705,1],    "boundingVolume": {    "region": [1.891662,0.595019,1.891757,0.595209,0.000000,8.807851]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/29_1075020.b3dm"}}}