{
  "manageEntity": {
    "action": "Update",
    "entityId": "401235853",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf8dfa8a42a8c4657028a060dc4e702450f1324694f5fe817859bb854f1bb1551",
    "signature": "0x71afca3a880072a57edcc1b10f6929ba88266719063b1c688d6047af1dcc272d1883906e7989b73ea9b7d8b489bd56167ac0aa422cb5c7ba3979d5f7f051f2cf1b",
    "signer": "0xC982f8B52eee7F9710Edeb184eA0a7401A3C79fC",
    "userId": "401235853"
  }
}