{
  "manageEntity": {
    "action": "Update",
    "entityId": "422383007",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xec36e151b2007dd0fe02c43de213d53170ddb93c31f89f37bb2978c92f1c5ca7",
    "signature": "0x01e9ca2766ad3f269d9e2f1e7024907076c41c6256c9cdacc8a10ecd52211752202571d48ae27639b807863596b91948426a21b74a9328c7ec22bd04d3a2c4261c",
    "signer": "0x4466e1a64e35Dbca375F17dc03485C9C5c71F49c",
    "userId": "422383007"
  }
}