{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.952582,-0.304281,0.000000,0.000000,0.113403,-0.355020,0.927955,0.000000,-0.282094,0.883125,0.374852,0.000000,-1800080.181036,5635340.334893,2375970.578861,1],    "boundingVolume": {    "region": [1.879906,0.384173,1.880053,0.384302,0.000000,13.403388]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/21_39435.b3dm"}}}