{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949127,-0.314894,0.000000,0.000000,0.115931,-0.349428,0.929764,0.000000,-0.292509,0.881656,0.370299,0.000000,-1866519.888948,5625904.136286,2347085.667288,1],    "boundingVolume": {    "region": [1.891087,0.379273,1.891196,0.379389,0.000000,4.513977]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/16_6849.b3dm"}}}