{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.896740,-0.442558,0.000000,0.000000,0.286888,-0.581312,0.761427,0.000000,-0.336022,0.680870,0.650772,0.000000,-2146240.637178,4348853.118999,4128785.769404,1],    "boundingVolume": {    "region": [2.029197,0.708563,2.029294,0.708639,0.000000,10.914155]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_1791104.b3dm"}}}