{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.896751,-0.442536,0.000000,0.000000,0.286873,-0.581318,0.761428,0.000000,-0.336006,0.680880,0.650771,0.000000,-2146135.974370,4348912.113668,4128778.086505,1],    "boundingVolume": {    "region": [2.029172,0.708562,2.029270,0.708638,0.000000,10.914155]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_1791102.b3dm"}}}