{
  "manageEntity": {
    "action": "Update",
    "entityId": "529321365",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4143cb113b2092731ba909940fdf78f1e889244ab1aedab80506df0c0b9fd95c",
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    "signer": "0xB5EC92299b6f6D4D13A598E9ED72C49B48Ec70F5",
    "userId": "529321365"
  }
}