{
  "manageEntity": {
    "action": "Save",
    "entityId": "2031682684",
    "entityType": "Track",
    "nonce": "0xaffe73fda99b022cc97a127046ecf439384be75bc50fff7484da954178186c37",
    "signature": "0x1566bfe96cdc1bc86e06b284a162be829c0d42732524eb1cf68dfd1697fe7fab0336174a88bc1885e85ac356504f7c8a0ee383994ee35b1cd4b999ae492363eb1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}