{
  "manageEntity": {
    "action": "Update",
    "entityId": "45511108",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x14e59b969048d2677f5fed1e7ad8e1e69ba3b4b96143824bf13baed8c7c7de24",
    "signature": "0x4e8bd114ae0ad34c54e1262ea945de5e8c184ed60f2ceaa5c87e3129ddd4487a168f37883962cbbe02d02df8bec4e0202d4aef5b595ac6d586d2d9eb49b0b3461c",
    "signer": "0x4B140b61EB41438Cda0Dd10473ad1334309C1b97",
    "userId": "45511108"
  }
}