{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.896740,-0.442558,0.000000,0.000000,0.286884,-0.581304,0.761435,0.000000,-0.336025,0.680877,0.650764,0.000000,-2146260.652009,4348896.069149,4128730.497655,1],    "boundingVolume": {    "region": [2.029196,0.708552,2.029294,0.708628,0.000000,10.914155]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_1791073.b3dm"}}}