{
  "manageEntity": {
    "action": "Update",
    "entityId": "456994864",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xafafcccbfc9291e936c81af04edd0c85afb11d504ff0ef0c9754efb87b32a101",
    "signature": "0x990b1bee8dd2997e4604fb1ddd08a822a0db5f645a25d0d102f8dc534786ac174e237ea976b6e548cb74b3f16eb4082e5cf89978346d320208c544c9f85c9fc61c",
    "signer": "0x7F5B701ec5cdfD606256924C9e751d9Aa248084A",
    "userId": "456994864"
  }
}