{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.896515,-0.443014,0.000000,0.000000,0.283510,-0.573731,0.768410,0.000000,-0.339478,0.686991,0.642494,0.000000,-2168233.950387,4387789.063107,4076116.457767,1],    "boundingVolume": {    "region": [2.029670,0.697674,2.029839,0.697823,0.000000,53.214907]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/2/1/2_508835.b3dm"}}}