{
  "manageEntity": {
    "action": "Update",
    "entityId": "323879851",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierandeujqgq4kwp5b2go44wodtljzj4nkdy6mhsynzqagb6phshih3q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":320679866},{\"type\":\"playlist\",\"playlist_id\":557879909}]}}}",
    "nonce": "0x568d657e80da36b07f7cdd6dfd2e2aee399e908aa159fd267ded291265ff0845",
    "signature": "0x2bf959a3740930dc35195068f6810d44f22767bf5155d0afb20b2e44e4a81e050d1a79c2706bef7d0a464d88fbb3459d121c6d03a5a9147a9ea547f63b1429421c",
    "signer": "0x12aD0F6A7Bf3ef1Fb0FFE6e1eF9E50BCa3149Af5",
    "userId": "323879851"
  }
}