{
  "manageEntity": {
    "action": "Save",
    "entityId": "1946380007",
    "entityType": "Track",
    "nonce": "0x9cf64457a3351b35514ab3fd2cb5682fb640dcd609aabd2c3b090f0a86c0f354",
    "signature": "0x52c38b2d61f44714b371d848aee689e597cef3967ff706f343ebda5daef1dbc04cd7f7d05e859898f381084c70486ff096abe4d9725be692ce6528d8e36399711c",
    "signer": "0x05aba01c97C4F182D989670622abE9c797782dD2",
    "userId": "508263176"
  }
}