{
  "manageEntity": {
    "action": "Update",
    "entityId": "303393509",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xce75526cbeecfb7088bf50fd0c37010f42c15327369a52b7d764aa5efae8f021",
    "signature": "0x1bf437553309849ec9ffebda8cd115de5ceeee70f4051ddc8faee8c3c5c97b284b412e53218f61469209061415f27e087893136de237aa199ed86d31de650e4f1b",
    "signer": "0x4E073b7076371ff6Bf848d0B4abA785B38B5ff1E",
    "userId": "303393509"
  }
}