{
  "manageEntity": {
    "action": "Save",
    "entityId": "1822779228",
    "entityType": "Track",
    "nonce": "0x93ee2783cf7c6075f42016323338a55a66047ce0fbdc714f59398179e0b186c4",
    "signature": "0x559f8dd3ce755c22d0cb58ecabcdc1b8e867a88c61284141da57be1bbbbd65972052c95f2ef067eca5c76ef435da6d4fb1819ea63f2d1ee964296a81d060a2651c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}