{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949916,-0.312506,0.000000,0.000000,0.174501,-0.530424,0.829578,0.000000,-0.258703,0.786373,0.560973,0.000000,-1651786.797197,5020885.385560,3557757.132955,1],    "boundingVolume": {    "region": [1.888545,0.595495,1.888709,0.595626,0.000000,7.645795]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/15_1354274.b3dm"}}}