{
  "manageEntity": {
    "action": "Save",
    "entityId": "1066960",
    "entityType": "Track",
    "nonce": "0x0a131b15ee85dd9c90bdcf1336fbef159f83c439d679b4e298a4593579e02a49",
    "signature": "0x86613802170e7ab8e1b79a85ded6ed97b030c0d406764270dde688e1f113b9c36fc2416fb5621409844b6e264ecf3c6823ad6774e63b256c9bc19622d98c2a3f1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}