{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.898093,-0.439807,0.000000,0.000000,0.284289,-0.580523,0.763003,0.000000,-0.334630,0.683319,0.648921,0.000000,-2137327.695142,4364459.633270,4117003.938732,1],    "boundingVolume": {    "region": [2.026113,0.706054,2.026246,0.706276,0.000000,10.642843]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1820448.b3dm"}}}