{
  "manageEntity": {
    "action": "Save",
    "entityId": "527594113",
    "entityType": "Track",
    "nonce": "0x61ad98ed8f689038cd54b34e6b1cebbc2a9deb35ad8079a61b4ca928691b6b2a",
    "signature": "0xa8702c22dc652f1aa429d77ac34a37a84a257f24d090c65b0fd6e34380913b8418e069f69f10629f35afd095a0c6e90754d9f7c636e750b272c2973f34d16aef1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}