{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948993,-0.315297,0.000000,0.000000,0.116060,-0.349321,0.929788,0.000000,-0.292891,0.881555,0.370238,0.000000,-1868954.321938,5625258.631067,2346698.171933,1],    "boundingVolume": {    "region": [1.891511,0.379208,1.891620,0.379323,0.000000,55.528026]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/19/15_7973.b3dm"}}}