{
  "manageEntity": {
    "action": "Save",
    "entityId": "1893610874",
    "entityType": "Track",
    "nonce": "0x47121892282168f225914f6780967d3aa35e895d5e34e626e396daab40c1bde1",
    "signature": "0x722287e04edca59ca0948300de8fcf6c37c8119d73e581eac44acc91750d38a9085e54df00bb6c358283302aeb975e783e382b969c319d0247d80fba598156ab1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}