{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950165,-0.311747,0.000000,0.000000,0.173874,-0.529947,0.830015,0.000000,-0.258212,0.786997,0.560323,0.000000,-1648642.571914,5024861.096340,3553628.008832,1],    "boundingVolume": {    "region": [1.887745,0.594710,1.887909,0.594841,0.000000,8.743291]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_1459736.b3dm"}}}