{
  "manageEntity": {
    "action": "Update",
    "entityId": "876735576",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd0ea8bc662c88865d804242a7f464a72715d2abe58936e31b74b94add5044139",
    "signature": "0x0e0e39d358bfd8fc0fb632b5ef027766787b0663c8335d45869852846d4385ee0168d204b3761ad5dd27bbe343b1005cf4e9e6f84fc4a823219e123c261c92c91b",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}