{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949001,-0.315273,0.000000,0.000000,0.116248,-0.349918,0.929539,0.000000,-0.292790,0.881324,0.370867,0.000000,-1868313.546153,5623793.814682,2350688.945232,1],    "boundingVolume": {    "region": [1.891511,0.379928,1.891571,0.379957,0.000000,21.690475]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/19/21.b3dm"}}}