{
  "manageEntity": {
    "action": "Save",
    "entityId": "2108047487",
    "entityType": "Track",
    "nonce": "0x76416af5141f035af0e3c953102a94b183f22052c1f54a17f0d85837fe5e6653",
    "signature": "0x93c6526a8954d6b651e8dcc057ae059628d32cdbc26a94fca8e89a5852a14b871bd7c00a19a517a5b524a060b9c772d1d3e42ca61c01636f89a1b9e1e6795b7b1c",
    "signer": "0xE7D37531a757aEaf8B2c8037a79C03819edc20Dc",
    "userId": "870684573"
  }
}