{
  "manageEntity": {
    "action": "Update",
    "entityId": "991145388",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1fd2f28201b4aee6bfb6a43869d66e99e7a35b46995e55adc4b09faa72212dd1",
    "signature": "0xad618719418874a261e223f23b74bb29af30cbcd830fa134765d8e572eb079ec7dd6ab2b412a8ce98dfa7275f36bee99cdc0895f79434dbf4c86a7b6ed3803191b",
    "signer": "0x91af5371612191C6FEf370a9bC459526ff717F0A",
    "userId": "991145388"
  }
}