{
  "manageEntity": {
    "action": "Save",
    "entityId": "324876",
    "entityType": "Track",
    "nonce": "0x91ca0436d43215ba6fc4a94920a5ba89ce26d93bc74321be9c5890c6242a7980",
    "signature": "0x78bb2675254af17c3788fb2e10f7179da77fef30252e638103c084ddf0ff36fb1b36cdbbb7a2d261dcf9099d0ea6ecdbbffb92bc86088c421bb74bb86b9083621b",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}