{
  "manageEntity": {
    "action": "Save",
    "entityId": "76361",
    "entityType": "Track",
    "nonce": "0xb2d0a5a882e5d7ebf9a765aab9480439f5215461a9a6a71d6bb40d3868ffabf6",
    "signature": "0x16de0c42cbb0598a57bd9f8d298ee514f0894142cc26e081c648ac5db76a9fbb060f3a1ff69f069d7f8a3bd0034a84637f6b61809cfedc1031c90ff31a918f171c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}