{
  "manageEntity": {
    "action": "Save",
    "entityId": "1455330399",
    "entityType": "Track",
    "nonce": "0x3c1c11c3e56ba1fe1e130ea90dfc540ea7a1207f4f2bffdfaff71e6946f6f8ba",
    "signature": "0xeb0d4fb54754d8a5e077151b0e3f7b685cf2fa5027961e04a2420b8283128c780ca74a7d6214e7d726da3cac14201d84df9e8e67a599c1c6e8fa3f056fbca0eb1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}