{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950661,-0.310233,0.000000,0.000000,0.114190,-0.349919,0.929794,0.000000,-0.288189,0.883110,0.370221,0.000000,-1838952.454536,5635183.319668,2346589.756846,1],    "boundingVolume": {    "region": [1.886160,0.379208,1.886309,0.379286,0.000000,6.643965]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/16/17_4720.b3dm"}}}