{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950706,-0.310094,0.000000,0.000000,0.173228,-0.531094,0.829416,0.000000,-0.256656,0.786872,0.561213,0.000000,-1638716.738449,5024077.259756,3559284.670518,1],    "boundingVolume": {    "region": [1.886031,0.595793,1.886146,0.595908,0.000000,8.784505]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/13_1343224.b3dm"}}}