{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948718,-0.316125,0.000000,0.000000,0.176553,-0.529850,0.829510,0.000000,-0.261678,0.785317,0.561073,0.000000,-1670776.522680,5014142.665295,3558394.870348,1],    "boundingVolume": {    "region": [1.892390,0.595570,1.892486,0.595793,0.000000,5.303880]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1070422.b3dm"}}}