{
  "manageEntity": {
    "action": "Save",
    "entityId": "1103189189",
    "entityType": "Track",
    "nonce": "0xb0e92faf83afd2091a00540eb0ea6c7a56e9a8eb33a22afd9f6a13524184dfd4",
    "signature": "0x90fbe3b3faab11b9a9d3e0bc4a2bbfdeecd86dcd18cd4467563d51b1a4f88e98650a591735c3ac4d57713bcd9595d97fb751996b71b615e3c40398906d16c83d1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}