{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950754,-0.309946,0.000000,0.000000,0.173082,-0.530927,0.829553,0.000000,-0.256576,0.787043,0.561009,0.000000,-1638204.845240,5025167.395036,3557989.863862,1],    "boundingVolume": {    "region": [1.885875,0.595547,1.885990,0.595662,0.000000,8.812964]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/11_1421538.b3dm"}}}