{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858311,-0.513130,0.000000,0.000000,0.262934,-0.439809,0.858740,0.000000,-0.439865,0.735760,0.514952,0.000000,-2808013.030923,4696951.238717,3265345.876919,1],    "boundingVolume": {    "region": [2.109542,0.540889,2.109706,0.541014,0.000000,7.962833]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/12_284904.b3dm"}}}