{
  "manageEntity": {
    "action": "Save",
    "entityId": "2081462054",
    "entityType": "Track",
    "nonce": "0xfd033ea40ccfb5c2c8ae7ee86b7fbd232bc482150aca38914eb8046dad815b6d",
    "signature": "0x3d8ada2115683f1362c6ba804c44533a7792776b8051c8b1e8f5874fcc4c5d6638cce223c1553cd1e5fa96c24794bdcce05ae6bbb0ff8a2b51eec48a1f07625b1c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}