{
  "manageEntity": {
    "action": "Save",
    "entityId": "1091285612",
    "entityType": "Track",
    "nonce": "0x584f0de01c5e2e2acd7a7ce392332701d47d69f29bd66206a97c7c2f60a47c01",
    "signature": "0x7b8370462f0d4130e1df2517daf481cb4cbf81afcb6c6674443211f6b041c727359d48fff65cd2cddb7e66f7ea51c9934068dbe798311d9fcb7a93eddb3de0421c",
    "signer": "0x97eAfE883FbF33a8b75f6f37440caFE5CC452d3f",
    "userId": "849776474"
  }
}