{
  "manageEntity": {
    "action": "Update",
    "entityId": "66921139",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieragvidwnlndyuovbij4ys6jokwi3ieyvk6yoentaifyiapzpsk2eoa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1624951704}]}}}",
    "nonce": "0x7559399ae015fdfd4d7c80360dc10d963fca260b2ef55e54ea6afc992d4bfdd4",
    "signature": "0x99e71c66b6bb3b8d9f294ba952df9400093f53a543d0d40c54455a8730a9ef8c6e6aa1d02f87af8f40fff63989d5532f02b95814c10de142e83c8242de1577b61b",
    "signer": "0x363801E3FA842957f7b59D108F8Cf2A0F0989Bc1",
    "userId": "66921139"
  }
}