{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.889448,-0.457036,0.000000,0.000000,0.287118,-0.558768,0.778037,0.000000,-0.354645,0.690184,0.630772,0.000000,-2264994.640656,4407962.722463,4001547.216049,1],    "boundingVolume": {    "region": [2.045406,0.682510,2.045506,0.682584,0.000000,52.289400]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/2/1/1_520980.b3dm"}}}