{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949651,-0.313309,0.000000,0.000000,0.175038,-0.530545,0.829387,0.000000,-0.259308,0.785971,0.561256,0.000000,-1655649.141453,5018327.872227,3559557.615587,1],    "boundingVolume": {    "region": [1.889423,0.595862,1.889522,0.595943,0.000000,6.931706]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/1/7_1351518.b3dm"}}}