{
  "manageEntity": {
    "action": "Save",
    "entityId": "923936082",
    "entityType": "Track",
    "nonce": "1792299498356945631",
    "signature": "0xb97ad818cb0e55e064288bedcc70a8531560a0d7475e4ea8683b18d2fd6e687b3d97d57c761ed0a5269e74e77000ee3f4b60283e03cb6cb1a4b7c3c61dc741871b",
    "signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
    "userId": "568518925"
  }
}