{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948820,-0.315818,0.000000,0.000000,0.176357,-0.529833,0.829563,0.000000,-0.261440,0.785452,0.560994,0.000000,-1669260.511451,5015005.122179,3557894.305151,1],    "boundingVolume": {    "region": [1.892067,0.595475,1.892163,0.595698,0.000000,8.778929]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1070814.b3dm"}}}