{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950683,-0.310165,0.000000,0.000000,0.173354,-0.531345,0.829229,0.000000,-0.256656,0.786674,0.561491,0.000000,-1638720.032793,5022814.861136,3561052.501403,1],    "boundingVolume": {    "region": [1.886114,0.596137,1.886212,0.596236,0.000000,8.722342]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/2/2_1427335.b3dm"}}}