{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951835,-0.306610,0.000000,0.000000,0.112528,-0.349331,0.930218,0.000000,-0.284954,0.884609,0.369146,0.000000,-1818306.929492,5644730.905943,2339766.882495,1],    "boundingVolume": {    "region": [1.882343,0.378029,1.882507,0.378150,0.000000,13.709350]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/8_47655.b3dm"}}}