{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.952380,-0.304913,0.000000,0.000000,0.168820,-0.527302,0.832738,0.000000,-0.253388,0.791444,0.556247,0.000000,-1617818.217667,5053177.243837,3527722.168615,1],    "boundingVolume": {    "region": [1.880589,0.589819,1.880697,0.589906,0.000000,7.386721]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/6/16/21_1322825.b3dm"}}}