{
  "manageEntity": {
    "action": "Update",
    "entityId": "43887320",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x21de00cf35199ab40bcb7b89006c14ffe886d85ddceefaec58092290fcfbd9ed",
    "signature": "0xc44830daa699cf1ed364832b382aee4add5b04675936646d5bd59714892263f07314876ddae6231800f19e13310375fe61b5ebc46d4e052f74311944c3228a261c",
    "signer": "0xe77528058B27FBC04D69b1DFdE28347c6ef15a38",
    "userId": "43887320"
  }
}