{
  "manageEntity": {
    "action": "Save",
    "entityId": "968915194",
    "entityType": "Track",
    "nonce": "0xa3ba8ba9db2240a2bee6bca07090edf6a4b796beb09239161821b58a0fc361b1",
    "signature": "0x2c531a35d5efda263937912e2a0bb941f037a89eba6b5c1bb5ca43e0f89fb8077a3978a4738af7cbfc06116d61a776891939b749f75efabe2b377b613d7ba0501c",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}