{
  "manageEntity": {
    "action": "Save",
    "entityId": "801322",
    "entityType": "Track",
    "nonce": "0x53ebf268a38bf34931b2f279ef15f280e6f3b71398c90d7b3cff6c72a6685bde",
    "signature": "0x753dd929027df468a79d76252f88c6d20d292a8a771f83c8de3a63f126f981cd6df0f5b16b64da7186495509d7a759f04e906c9767ba54fa6a68fbb4a6a906e91b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}