{
  "manageEntity": {
    "action": "Update",
    "entityId": "381165787",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa26afb68ca5affaea892534ade1e650fc10964e032478a9d25045f22ff8c09fa",
    "signature": "0x9004a6795a83914924a5e83b1796880621e5df49af475be00bd880672b2f743f583a81f25e5e48faa1cc8585b1fa9dba87ad26f907965aa2676d68affa4c61561c",
    "signer": "0x1555636b51CD7261B750C68f520C0B8d1b9B8dEf",
    "userId": "381165787"
  }
}