{
  "manageEntity": {
    "action": "Save",
    "entityId": "1088485",
    "entityType": "Track",
    "nonce": "0xd3a6e1ca77365d8b017ad36a09e10be4eda31b5d27c14b300d0a3b7aee36e18c",
    "signature": "0xbea238ddb9f5017f1bd580f9d356f5859aa0e119b5c6a810c8a1286b4d3f53de0cbbddf9cd272d54ff5f855eb78fe1af5cea6f237d6664b6a679f723643f76bc1b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}