{
  "manageEntity": {
    "action": "Update",
    "entityId": "754103162",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierap7bv4h5yadqzvr6uct4jjozzqamtf6j4esa7zofouwxwekwfmzsq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":404847203},{\"type\":\"playlist\",\"playlist_id\":1711820626}]}}}",
    "nonce": "0x245aa0661138e4550c1f0876dfb85d9d7254108d7f0d4508be76afb2b741e738",
    "signature": "0x7c1c5eea2021432e2f0c818d4bc8ba1f1423238e00a1000d28297fa5948bda915623ec30b6f0ef3beac499655918941b62912f1a062294d7f3cad9077795de931b",
    "signer": "0xf96978e1DB4195314698976e49324055A937D04f",
    "userId": "754103162"
  }
}