{
  "manageEntity": {
    "action": "Save",
    "entityId": "1343699659",
    "entityType": "Track",
    "nonce": "0xe6c8cf1a1c0a73623af3db38fd586485ed292ee33762103d33adb91b3b796cc4",
    "signature": "0xa94a0355527d520e83a7698e29c44761b2c856c5deeac4e7219c9f7ec70b056d769be2ace06aabc72066008d54ce0754cefc996dbca843b2de5614c7f5892a011b",
    "signer": "0x0E71C12c426F5C9206F778713f48B60477CA943b",
    "userId": "29088079"
  }
}