{
  "manageEntity": {
    "action": "Save",
    "entityId": "1547293102",
    "entityType": "Track",
    "nonce": "0x35ba4c8733d29c99f9e95600801425e0be59bbc56c540c55acb1dacdaab2db07",
    "signature": "0x73b6f6c965d804f126b5912b6027620c3cdba55635e910cc0ed7e2823f7ac76062d8dec16c230561eec50f47c0ed133fab9ef8e9e3c961e4f7dcb2641f3373d61c",
    "signer": "0xdA0eFB0e7b973C487c12501759aDb23012CB5248",
    "userId": "178070"
  }
}