{
  "manageEntity": {
    "action": "Save",
    "entityId": "1059620",
    "entityType": "Track",
    "nonce": "0x0037bef3544324bdd3bf99e32dc768f5713b4b261dbf589da44dd5e92c13a4d3",
    "signature": "0x20ba3f004b2d641d147d8d393255a03ba0905642ae22c1a43af4fb3c4db607fb4e42895a57450722c69fde2b9c34bc98432361ea5eee097a1f538c54b0b37f9c1c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}