{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950351,-0.311180,0.000000,0.000000,0.173801,-0.530791,0.829490,0.000000,-0.257578,0.786649,0.561103,0.000000,-1644601.778519,5022651.614443,3558587.001113,1],    "boundingVolume": {    "region": [1.887181,0.595659,1.887281,0.595776,0.000000,8.763194]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/12_1428662.b3dm"}}}