{
  "manageEntity": {
    "action": "Save",
    "entityId": "1799472706",
    "entityType": "Track",
    "nonce": "0x10354829a25fa0b1a5c00ec462e7ec533409324bcde6b73b2aeaa8adb9029a92",
    "signature": "0x5600d9735b941b4658b9bb11b9faef4460e57202af43eebae6d526ff3f77dd706f4086b3c193953a6560833e73154dc8cd51229168202919a45d3e1b8f3f9ab01c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}