{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858753,-0.512390,0.000000,0.000000,0.262166,-0.439383,0.859192,0.000000,-0.439465,0.736531,0.514192,0.000000,-2805449.942460,4701858.105980,3260516.095187,1],    "boundingVolume": {    "region": [2.108680,0.540002,2.108845,0.540127,0.000000,33.926833]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/2/4_221488.b3dm"}}}