{
  "manageEntity": {
    "action": "Save",
    "entityId": "826832691",
    "entityType": "Track",
    "nonce": "0x1210627c4e060e77d5176836d03b661bba6d564c69681d4195bad36e5e4cc20b",
    "signature": "0x8c7994c64f3276e0e9f03b8a439089989fda1b6f6ac06958f3626bf95d8f39533b047eea39356d8759b2e30ad6029105af4076aaa962bd60fc34d077b423304c1c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}