{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858224,-0.513275,0.000000,0.000000,0.262478,-0.438877,0.859356,0.000000,-0.440308,0.736219,0.513917,0.000000,-2810828.274830,4699862.877171,3258771.887591,1],    "boundingVolume": {    "region": [2.109710,0.539682,2.109875,0.539807,0.000000,52.491300]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/2_301904.b3dm"}}}