{
  "manageEntity": {
    "action": "Save",
    "entityId": "63408",
    "entityType": "Track",
    "nonce": "0x3113bc9df0cefee372c9591e1ba1c17a696bebbe1665f0c44e4020c16017c6aa",
    "signature": "0xe4d2a1829a37cffcbfe06d03acfc88a8b606c433b5207eb80115a5bdf9ffb00b0ff9862e3a98304ef05b84b647a5f70bf33ffc15dc027310d972ecc930e2dfbc1b",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}