{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950553,-0.310563,0.000000,0.000000,0.173704,-0.531662,0.828953,0.000000,-0.256899,0.786302,0.561900,0.000000,-1640273.107531,5020449.775053,3563654.116240,1],    "boundingVolume": {    "region": [1.886533,0.596632,1.886631,0.596731,0.000000,12.343590]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1394521.b3dm"}}}