{
  "manageEntity": {
    "action": "Update",
    "entityId": "543352483",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xcb01614e6780f4185a11ad4578415dba567935f83b961bccf8d48be46a72481c",
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    "signer": "0xD833B2E8d7076c9f0B42ca05D6f2Ea64B448601c",
    "userId": "543352483"
  }
}