{
  "manageEntity": {
    "action": "Update",
    "entityId": "534038283",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierarfuq7bpl3s25jv5spsdlhwnb65rawrqedgw7imqzjrxyhreby5ca\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":1206137286},{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4fc92495b5536e804e21d118c82f2b9c9a189db84522cd8f19b4eb617622a933",
    "signature": "0xb77505eece3eb87c3717a62eb976908e4f46192c10f75ee6e7bc5f93233153d47d1118931f2fe703a84367d8d2c9a7b7de4ef8020619234f7c62571cb16ccc2a1b",
    "signer": "0x6164d22C5753c6E9f1ec157dDef5A3C606E2f10D",
    "userId": "534038283"
  }
}