{
  "manageEntity": {
    "action": "Update",
    "entityId": "224019652",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xcf743a6ff534fbd33483519357b7025116423ae84e469ea46853c3b02cb090c5",
    "signature": "0xad1133056d516281ad56c100153fff3fd2a27ce25b4f9f5cadcc72e8e41a044671dfe8cbcc82b32cd2bd614b5c48a0d43b5cbd8014a8f5aa6900ec3f2d3e6e321b",
    "signer": "0x7964a5eF7E9a780013d3886B40ca04443D69588D",
    "userId": "224019652"
  }
}