{
  "manageEntity": {
    "action": "Save",
    "entityId": "218167102",
    "entityType": "Track",
    "nonce": "0x7bf60154e6b0c7db9783420539f6ece0131dc9aa0f479958bc3c7b5cbc18021f",
    "signature": "0x730abdbcd7b59f93162fa4485aaa2a0358a9e7f51bf2cd3c0d941584b0c498a64558089d4136ee20e7aa662af19d15b8f8b20e11d3cc01ef81084e2831059c371b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}