{
  "manageEntity": {
    "action": "Update",
    "entityId": "199243304",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieratt3bzypzikfu4e5kjramlmentpa3yipbe5u2ftj56ojdjworwvca\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":997668306}]}}}",
    "nonce": "0x7be744960ea635b6d50f7a7cac83d514b63ec1c42746103bc6a79c47dcc0c5c1",
    "signature": "0x5c500250c92286063872f80ec9c1523602ad3218dfa68e08bf3fc843f95160cc26bc1262a765ed5d81de652edc7225c3c65e1b6008208ab18d0c179ddf7f84981b",
    "signer": "0xA8DBD6c3a086D24BBe629671ecd91611166F8388",
    "userId": "199243304"
  }
}