{
  "manageEntity": {
    "action": "Save",
    "entityId": "2047945918",
    "entityType": "Track",
    "nonce": "0xadc54945784ad52852a0d38fb0f7ae489b1d10562a6a1fc9ffddddbf701e1cc8",
    "signature": "0x9f41c5980fa6be132303f73195ce712f14d4b0768f6f5729f588ef8766e1f606495ac18e73897f3cb8bd3593a82dad48c7109b87bc45774712bfa83b4467163e1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}