{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.857745,-0.514075,0.000000,0.000000,0.263162,-0.439092,0.859036,0.000000,-0.440828,0.735532,0.514454,0.000000,-2814157.807331,4695487.068341,3262181.486638,1],    "boundingVolume": {    "region": [2.110643,0.540308,2.110807,0.540433,0.000000,14.881633]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/7_389433.b3dm"}}}