{
  "manageEntity": {
    "action": "Update",
    "entityId": "542937414",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd6161137718b2f3845b55fc78f0e8bec11def4d5dd58eae6e9d84d81a4d10d82",
    "signature": "0xf2c65ad484980dac0f695a5f9b60688232c87154362cf162afa159e84e2fcd41434bd724d46aba816f878a04ef97d6b6a626baefb79c1255621a20063b862bbb1c",
    "signer": "0xaF7e1E037FC865Cf0F8b693008900402789b4138",
    "userId": "542937414"
  }
}