{
  "manageEntity": {
    "action": "Save",
    "entityId": "871069472",
    "entityType": "Track",
    "nonce": "0x60c22763b73897aec5e5b803dde55d5c5d03677fab025e541bfa972166bf7ccb",
    "signature": "0x3ef52cd995771eed9466f93c2787a44c938ebf12b6de4a1ffed6b8242678b6dc539e06cc33fdf572a3fef014e87186738c1f7a9e1aabd2cdc9f8c67876e4c8041c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}