{
  "manageEntity": {
    "action": "Save",
    "entityId": "1646463330",
    "entityType": "Track",
    "nonce": "0xafd666ee054cf7936b72cf35da7eb952a059aec67b3c5ce6dc7ea4fdac1af67e",
    "signature": "0xbaa4a7e63c890a262104812d808b52a9bfa8cf17ee1ac59c3de4fd18ee6a6381405e4427f948cee2a17667aa7d80570c039528e1187be10cf03a96e62e5338981b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}