{
  "manageEntity": {
    "action": "Save",
    "entityId": "1172605499",
    "entityType": "Track",
    "nonce": "0x3be2d681f13daca773f993ae04eb0d384dab1bef607d7fabdca63e2f72bd8a34",
    "signature": "0x0bb8d686579dcdf6132fac976ea1a4b0e6324502d8403a13c243ee5f9a6987807fb8f33cbffad4397c783827ac9fa34f8f25bb21252671465b3640f80f5723751b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}