{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950556,-0.310554,0.000000,0.000000,0.173828,-0.532058,0.828673,0.000000,-0.256804,0.786036,0.562316,0.000000,-1639669.730602,5018760.457310,3566292.519798,1],    "boundingVolume": {    "region": [1.886523,0.597134,1.886621,0.597233,0.000000,8.750039]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/12_1384473.b3dm"}}}