{
  "manageEntity": {
    "action": "Save",
    "entityId": "810134886",
    "entityType": "Track",
    "nonce": "0x9a4d6fdf9b37f524c9ad6e9c2c512b8f4b8a66c34f69f42adf2ef7947f8242fb",
    "signature": "0x1399345b4ee2e83db51c2517ed1ad9accf8a897972931ec3a366b894492a63a734bc48d04959b912a0695e38763c6c887648c63aeba473c09ca1e2b19bc0bb1c1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}