{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948970,-0.315366,0.000000,0.000000,0.175946,-0.529442,0.829900,0.000000,-0.261173,0.785898,0.560494,0.000000,-1667551.468641,5017844.128537,3554712.902629,1],    "boundingVolume": {    "region": [1.891591,0.594886,1.891686,0.595077,0.000000,7.305537]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/28_1075721.b3dm"}}}