{
  "manageEntity": {
    "action": "Save",
    "entityId": "228119789",
    "entityType": "Track",
    "nonce": "0x8f7a4478e73211e983c7ba6ae13e38df8c4ac4d033f83ca3b36f2dea06531533",
    "signature": "0x82d8194b0699ef283722bfa7165956db942e12e1cb66f226e7ac8052f22bd7de4fce1b48a8365494c92df96d6cd027d9f3fd5ec7b40124b2d40e9b323d9c63e31b",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}