{
  "manageEntity": {
    "action": "Save",
    "entityId": "830101119",
    "entityType": "Track",
    "nonce": "0x1e7c1d876bc3b65931204f568617b550e65635dfb2698dae78cdbe7913325562",
    "signature": "0x7f927aada6c9b4c12ba7d87afa54bb5a65aa4d6637d3f48e792c5a9ab04f7f043a0cde9e92930a346940466729b840229eaea6723fbc64d367c2fcd540719d9c1c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}