{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948959,-0.315398,0.000000,0.000000,0.175850,-0.529090,0.830145,0.000000,-0.261278,0.786123,0.560129,0.000000,-1668217.255573,5019274.682446,3552395.707007,1],    "boundingVolume": {    "region": [1.891625,0.594446,1.891720,0.594637,0.000000,8.725880]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/26_1092819.b3dm"}}}