{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948980,-0.315337,0.000000,0.000000,0.176065,-0.529851,0.829614,0.000000,-0.261058,0.785632,0.560920,0.000000,-1666821.969967,5016153.851710,3557421.348897,1],    "boundingVolume": {    "region": [1.891540,0.595443,1.891677,0.595550,0.000000,8.815893]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/4_1071523.b3dm"}}}