{
  "manageEntity": {
    "action": "Save",
    "entityId": "53374814",
    "entityType": "Track",
    "nonce": "1794073008679502797",
    "signature": "0xe35685c7da8b625227cdf391e3df534c971e25a771256919a85fa87420854413524e8c39c902eb231658ea32243dd2771111f9ce2dac409aaf8f17e5edf6f1cb1c",
    "signer": "0x18b6233ae43b1D6960433c6415df8bec788eF4Aa",
    "userId": "917718039"
  }
}