{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951517,-0.307598,0.000000,0.000000,0.114940,-0.355554,0.927561,0.000000,-0.285047,0.881758,0.375835,0.000000,-1818926.535335,5626632.688845,2382204.123968,1],    "boundingVolume": {    "region": [1.883416,0.385260,1.883511,0.385335,0.000000,6.675277]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/6/19/51_38850.b3dm"}}}