{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949673,-0.313243,0.000000,0.000000,0.173770,-0.526827,0.832020,0.000000,-0.260083,0.788508,0.557325,0.000000,-1660575.248052,5034450.022147,3534577.242837,1],    "boundingVolume": {    "region": [1.889342,0.591099,1.889462,0.591223,0.000000,6.018932]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/18/21_1322617.b3dm"}}}