{
  "manageEntity": {
    "action": "Save",
    "entityId": "1196708503",
    "entityType": "Track",
    "nonce": "0xe4c552baf8b4b531e8b8839b86bc0dfb94a7e97bc898c19b4539bbfab840e015",
    "signature": "0x28183e7c81c6b368a83a21f71ff4ac452bdb4f63f516ce11430f300ca9820cc741f3b333b803d7f04119c3483ea2362946471b08e689a0739ea31b8311dee73e1b",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}