{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.896744,-0.442549,0.000000,0.000000,0.286877,-0.581304,0.761437,0.000000,-0.336020,0.680882,0.650761,0.000000,-2146225.000747,4348930.184482,4128713.212070,1],    "boundingVolume": {    "region": [2.029187,0.708548,2.029284,0.708624,0.000000,8.919580]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_1791059.b3dm"}}}