{
  "manageEntity": {
    "action": "Save",
    "entityId": "103432253",
    "entityType": "Track",
    "nonce": "0xa0b88ea7224b73e31f7b6066b0bab6a2effbafa7bfd42f99eb40d33dca3dac18",
    "signature": "0x5c88a968f0627a58f3310e6ca71888f5316abb23680a64069c2650d2b0099a5147bb7c972f45295b88e382724dbf6cbd77ebb6353f6667c26fc33049e42349e71b",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}