{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950553,-0.310563,0.000000,0.000000,0.173303,-0.530437,0.829821,0.000000,-0.257170,0.787133,0.560612,0.000000,-1641995.334465,5025729.350539,3555464.976213,1],    "boundingVolume": {    "region": [1.886490,0.595052,1.886672,0.595198,0.000000,8.720680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/15_1346007.b3dm"}}}