{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948963,-0.315387,0.000000,0.000000,0.176014,-0.529604,0.829782,0.000000,-0.261153,0.785780,0.560669,0.000000,-1667427.154390,5017091.674397,3555825.630000,1],    "boundingVolume": {    "region": [1.891614,0.595098,1.891708,0.595288,0.000000,8.584053]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/29_1073756.b3dm"}}}