{
  "manageEntity": {
    "action": "Update",
    "entityId": "354139778",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraersso62dpljv5hwo3q6mxycjyhu23vjicxajh36g5ot3untsw73a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":927280500}]}}}",
    "nonce": "0x3ebe928d1c00c8acbb414a8faa38e355b8c32e39536f584be234a40b1499d048",
    "signature": "0x7a21b3c1e07a49a9af857195d2c54c238e2bc2ceb68da37d425b929c671559e02eb6812ac1dd929839fddfed2cf32e725d35c66c257513d7dada90dad619131d1c",
    "signer": "0xF97953a56A8056e15AE1BA3016669766979f5F35",
    "userId": "354139778"
  }
}