{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950738,-0.309996,0.000000,0.000000,0.173180,-0.531131,0.829403,0.000000,-0.256571,0.786886,0.561233,0.000000,-1638172.008511,5024164.705149,3559411.137433,1],    "boundingVolume": {    "region": [1.885913,0.595765,1.886058,0.595984,0.000000,8.813958]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/12_1343117.b3dm"}}}