{
  "manageEntity": {
    "action": "Save",
    "entityId": "179858362",
    "entityType": "Track",
    "nonce": "0x9b7a1bbaac5620c111c9ec407365b1a0336b2eda2bed46bab11f7e19c2cd0b7e",
    "signature": "0x97ce3e3915065cd114b74a46181f647fc4f74efdc253311b5f647b2cadc70dd9016c335ebe4d96fc301bd6e496aa2c65216ce244a868159f1248979f12dcd4081b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}