{
  "manageEntity": {
    "action": "Save",
    "entityId": "1011569306",
    "entityType": "Track",
    "nonce": "0x073e338954f53a01abe53afc177c31d415618de06e2c22ea83490210dbcb0287",
    "signature": "0xecb169ff52d3e793ff4a02b557b91a510af8d107472c10909a7abd04a4b6b74d5bf1a85087c6a78dcebb8ee5dc5c888f45f6e1f3a86ffc09768e8d15199000891c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}