{
  "manageEntity": {
    "action": "Update",
    "entityId": "193673966",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6c6f24bc45eee9aa24484f5d5ec377e191375d443ae0a0e3892984024584cf78",
    "signature": "0xff7f8d12fa5d4b8a7cd7c138178dc43b9e4af83b09198208d0178b864dfaee2a60f5bcea847926f74f4b63501aee5121111413546e4cfe645cdcedb29b7424421c",
    "signer": "0x999962dbCCfAC55Bb2a8C1F713E10904Fe70740e",
    "userId": "193673966"
  }
}