{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950508,-0.310700,0.000000,0.000000,0.173769,-0.531602,0.828977,0.000000,-0.257020,0.786288,0.561864,0.000000,-1641046.617805,5020362.083608,3563423.089650,1],    "boundingVolume": {    "region": [1.886677,0.596588,1.886775,0.596687,0.000000,18.141249]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/6_1393509.b3dm"}}}