{
  "manageEntity": {
    "action": "Update",
    "entityId": "407216161",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbe0d9cdbecf6caf903321e823975d06da1f96e9848314dc9b7a25ffd8f8ce141",
    "signature": "0xb6dc2f9f695c312ea7ae1f5c87eead86ef390cb27d530feef49fceb540b9302e6c53e26d5f8d071ee691f2320bb2137f856845fd09b9c806aeed310963502dca1b",
    "signer": "0xEFAB3332CD5EA33e9817aa57B32CaCb8Acf973A4",
    "userId": "407216161"
  }
}