{
  "manageEntity": {
    "action": "Save",
    "entityId": "483538235",
    "entityType": "Track",
    "nonce": "0xd268a5e66117a129431bd8ac259ea14fdaff474f5349dabbc95436d8903dbebb",
    "signature": "0x5e0f9b585e52b8a392bfee78ccef6e6660a6cf3bf0ec30c1c558f23f34a743c8531bdeb5e13d60c680135176ac1c8cebab49e0756b9a2ebcc3b5aede8bb547621c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}