{
  "manageEntity": {
    "action": "Update",
    "entityId": "124240357",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbf44bcc480ac5dd6a4146021a25b552b562141347f423a09846b31f07817141c",
    "signature": "0x6007fbdaa261f9868acf07ffe1bb3987470a1fa94e001c3bbb49c18a0ced6ac244b5e7ff6d4f90eb9beb66a3dd9fabb68587ff6b4161a56e417e94063335d67b1c",
    "signer": "0xE54C9A93478469Dfdc87a1bE430c7350001E0829",
    "userId": "124240357"
  }
}