{
  "manageEntity": {
    "action": "Save",
    "entityId": "43006759",
    "entityType": "Track",
    "nonce": "0x89e419a497c8360f83d42c83362f68a303578fd0ac2170178cfc6e04679608a2",
    "signature": "0x47eafe533473500fb7675d1a6019d8cb4574f927894ec0dc53df5ac3a6a777ce1ce845d59ba9675298e97d8bd4b93a642d6d991fb5baffc9256bd89d2e3066821b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}