{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.857990,-0.513666,0.000000,0.000000,0.262936,-0.439189,0.859056,0.000000,-0.440488,0.735760,0.514420,0.000000,-2811985.514762,4696937.438250,3261968.204797,1],    "boundingVolume": {    "region": [2.110166,0.540269,2.110330,0.540394,0.000000,34.770131]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/7_387044.b3dm"}}}