{
  "manageEntity": {
    "action": "Save",
    "entityId": "1713374251",
    "entityType": "Track",
    "nonce": "0xec85ae8e3541088b1d49d76f54d1a3bd7154197be4ed23cf2f4d8be368b9d4e5",
    "signature": "0x3680b1eb06143b21fa6cb1453ebbb158c2dd0eb176b26bb7d6706e4800cdc07d7ab10e38c7b309797d4532324da61c7130148735eb672f5f2f1f6f8ad7b94fab1b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}