{
  "manageEntity": {
    "action": "Update",
    "entityId": "602774055",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9a9dea2cefea831a1f45392ae99dda99db6d29ae698aa5187b040299909af83a",
    "signature": "0x639dfcbfb4df38503364b1463c5b8365c71c26b95c171bcedbf95898facd84e867aab6a0dea7876ba907cb76df17e4933c329a7ca65edc87ee9a1430f4bf331b1b",
    "signer": "0xEB943148F7939B794BEae8C82cB90334555f23E3",
    "userId": "602774055"
  }
}