{
  "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": "0xc8852aa817667ca3267014e64c1178256abb651e9a84562092ee47a763eb251b",
    "signature": "0x7abe8caf82e405d3919898d7188ebc0ed5e9eb1782c04b8df47ee6f1315d37bd0e008f069344d0bc3eb916c4cf7691af7f7ae5ada2179bee891ed7001147c0ca1b",
    "signer": "0x6164d22C5753c6E9f1ec157dDef5A3C606E2f10D",
    "userId": "534038283"
  }
}