{
  "manageEntity": {
    "action": "Save",
    "entityId": "1427447195",
    "entityType": "Track",
    "nonce": "0xf3f45c41270fccd4a17a0f65da1bad27c7655284b9045e6df1a07e70f0dfc014",
    "signature": "0x96cb5696ce09f3f2f195c9cb34b852312c487cbdc4b726955f572e4ead03732c47c3d0d5a1628b4eedc431b0930295d6cf7b7ae2076b401021c4b2f998f3733a1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}