{
  "manageEntity": {
    "action": "Save",
    "entityId": "206846269",
    "entityType": "Track",
    "nonce": "0xf9d86062b7b5bc83f459d86488bd12477e3bbf293476eec2417b8766dbdcc7d2",
    "signature": "0x7c4efd9ad0419539ba34046f813bb85833f867421682755e605bf652d047e3643be9990bc903cbd56f1613d32f934bd4ca39dfedf5c36c00fddecc048feb927a1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}