{
  "manageEntity": {
    "action": "Save",
    "entityId": "1089808498",
    "entityType": "Track",
    "nonce": "0x67f6552838f382082b709ac0180f3431aab3ebeae4f8b47519d62d7250884ea8",
    "signature": "0xff9ff9e8e0116266ad8d6a6465bb92d0167118d47fb8bdf50da59f5d933d0c08653c98fdc349f9760bea920af7438171b04cab8a188dffc2b29289a1a77cd69e1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}