{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950842,-0.309677,0.000000,0.000000,0.172982,-0.531128,0.829446,0.000000,-0.256320,0.787013,0.561169,0.000000,-1636569.577566,5024974.449023,3559007.910682,1],    "boundingVolume": {    "region": [1.885577,0.595688,1.885722,0.595908,0.000000,8.801387]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/13/12_1421946.b3dm"}}}