{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.896781,-0.442474,0.000000,0.000000,0.287583,-0.582857,0.759983,0.000000,-0.335316,0.679600,0.652462,0.000000,-2141747.438099,4340769.398823,4139539.100936,1],    "boundingVolume": {    "region": [2.029063,0.710777,2.029242,0.710882,0.000000,7.185982]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/6/21_1781725.b3dm"}}}