{
  "manageEntity": {
    "action": "Save",
    "entityId": "1605090106",
    "entityType": "Track",
    "nonce": "0x17d8dffec0a2698ee80ddfadc13f71abc50d97d280a0d5443d76bb9f7a6c8f37",
    "signature": "0x95416175f971c4e0f7423298b76959fd26cab3d82279481439d056a69e680b066dc589dec479d6293ecdfb483ffd162b14895d394a0023912e31fe2ff76cbfb81b",
    "signer": "0x01eB7915E4941D64a8ddf370bE06647ad5F79d4e",
    "userId": "911613164"
  }
}