{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950072,-0.312032,0.000000,0.000000,0.174428,-0.531097,0.829163,0.000000,-0.258180,0.786105,0.561589,0.000000,-1648450.285088,5019185.125230,3561675.145210,1],    "boundingVolume": {    "region": [1.888058,0.596201,1.888196,0.596409,0.000000,8.817862]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/3/4/2_1433020.b3dm"}}}