{
  "manageEntity": {
    "action": "Update",
    "entityId": "1640466",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierafipzyylx355qpcb3ssnqmjsvg5ykpc7umchwmqvdlfdnxzjwuqdq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1746194365}]}}}",
    "nonce": "0x941712247a0e05208436e463bfd8d9df75c97437c0fab6f98f1508893ce53d52",
    "signature": "0x40e0c0d99271ce4767105cc72902350ba32d252330bd28b984b6b857a98fdfa5127296e487a286f4bb3d356d2291f69ba466fff46fe97862725dd2694b5cc78e1c",
    "signer": "0x635a32c502d056dd6e3f4aC1eb15Fb0d90a88171",
    "userId": "1640466"
  }
}