{
  "manageEntity": {
    "action": "Update",
    "entityId": "608503734",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xeed954f7fad776bcedfb76dc5986eca8ae4c8799cb0f6b43ae3f5c60f806212f",
    "signature": "0xaa20c8002ebb7c2e286543dbf9f456c0a4d8b1599bc4c5399390cadbe87c4ff3283632b7aa5510987a828f4b2ac9acfc5a91fa7d09ee4fa6f791353189a9d11a1b",
    "signer": "0xf80A66E0A87c29e124F5C5070185006323A73B76",
    "userId": "608503734"
  }
}