{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950270,-0.311426,0.000000,0.000000,0.173781,-0.530267,0.829829,0.000000,-0.257888,0.786907,0.560599,0.000000,-1646580.613089,5024288.719064,3555381.070084,1],    "boundingVolume": {    "region": [1.887440,0.595050,1.887540,0.595167,0.000000,8.750799]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/7_1453258.b3dm"}}}