{
  "manageEntity": {
    "action": "Save",
    "entityId": "111126",
    "entityType": "Track",
    "nonce": "0x4b75c80afefdbcbb3e1aa3ab815169f1244024ad619e0b02e56a1b44c3acfeb9",
    "signature": "0xc45412d0ad86ae6f1a5cb9c3f522fd42b92e48bce443e5a6f1f74238930d09a94269c90a514110a82e1fe4746a0f24a3afcdfd5563a94c1d5f6f075fac86c6f31c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}