{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948950,-0.315427,0.000000,0.000000,0.176011,-0.529522,0.829835,0.000000,-0.261203,0.785819,0.560590,0.000000,-1667746.690162,5017343.183790,3555324.243753,1],    "boundingVolume": {    "region": [1.891656,0.595003,1.891751,0.595193,0.000000,8.807851]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/29_1075220.b3dm"}}}