{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.896308,-0.443431,0.000000,0.000000,0.283784,-0.573613,0.768397,0.000000,-0.339792,0.686821,0.642509,0.000000,-2170237.898248,4386705.090918,4076216.032382,1],    "boundingVolume": {    "region": [2.030153,0.697709,2.030286,0.697828,0.000000,66.439108]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/2/1/2_539997.b3dm"}}}