{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.942866,-0.333172,0.000000,0.000000,0.186714,-0.528394,0.828213,0.000000,-0.275353,0.779241,0.562995,0.000000,-1758107.557007,4975388.728203,3570612.374650,1],    "boundingVolume": {    "region": [1.910400,0.597974,1.910524,0.598037,0.000000,7.809131]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/2/21_1249150.b3dm"}}}