{
  "manageEntity": {
    "action": "Save",
    "entityId": "69393",
    "entityType": "Track",
    "nonce": "0xdad38a2764f8cf57baaaa94fb36b9d8196a65d23708fb8310d858ba6ae547c19",
    "signature": "0xbd68589fab33739311721619df062895269a8c98f12c6fa6539bd1e0d27d88f749e7056a8b1804a01c803d7db0dee48cc7a4e0023a12fd6e2d6acec1178837eb1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}