{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950659,-0.310239,0.000000,0.000000,0.173274,-0.530959,0.829493,0.000000,-0.256800,0.786906,0.561099,0.000000,-1639632.733621,5024294.210818,3558561.381417,1],    "boundingVolume": {    "region": [1.886183,0.595656,1.886298,0.595770,0.000000,8.786480]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/12_1424242.b3dm"}}}