{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950543,-0.310593,0.000000,0.000000,0.173326,-0.530450,0.829808,0.000000,-0.257191,0.787112,0.560631,0.000000,-1642128.831244,5025599.967627,3555585.391527,1],    "boundingVolume": {    "region": [1.886521,0.595074,1.886704,0.595220,0.000000,8.507867]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/15_1345920.b3dm"}}}