{
  "manageEntity": {
    "action": "Save",
    "entityId": "568160",
    "entityType": "Track",
    "nonce": "0x6d65d6b4f8d28ffa2f50955fde27f68e1a79034421e8eb13a0949f4c8b3f4550",
    "signature": "0x6f03a190c102cbb7c8ca5e63c0206ded4ca3105c6a2078d54b3577257e9b694f5cf375409e975c354ae1dfaced69bee5bf310baf53f274e73f258ae1285729c81b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}