{
  "manageEntity": {
    "action": "Save",
    "entityId": "593491311",
    "entityType": "Track",
    "nonce": "0xae5d5ffe898f09c10f738d6ba9a6c6d67266ded67583092b569becf227d9f1c5",
    "signature": "0x29230b59d481cd8eda4369a51469653fc6cabcdd7921c78e1a45b9492ffc0e935c88f134c586847b2c20bee34a657ed28edb5721a2ed3d0038c290f16c33b5771b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}