{
  "manageEntity": {
    "action": "Update",
    "entityId": "407046354",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf96fdfaba78ebaa0a4124c563717f434a1d72c95b896b234410567878cb8309b",
    "signature": "0x756d2cc3a2531b92c92ec587995108ac5ebdab1d1c1386038c863d0b0d6a2b9e42e7080fb2b001a6e7d03c11393a5e11645a257aff8c27c408cd2b5919fdec551c",
    "signer": "0xd4172DACb313eb72C6Ee29bc685450908f4A1926",
    "userId": "407046354"
  }
}