{
  "manageEntity": {
    "action": "Update",
    "entityId": "505182311",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5ac794f603abbefd0a6e5aca9a6700a4ceee277c683ae672fb5e76676b28f23a",
    "signature": "0x180c49273e55065ac6df1c2750b09c81cdee5b095fa3d9edb2f8de0fa389ad17206db6a137ccf9820db5901977841ef8a732c4f121c04a903a460db03dfaa2641b",
    "signer": "0xA819E5C5714510Db532e726DB8526f18026feA20",
    "userId": "505182311"
  }
}