{
  "manageEntity": {
    "action": "Update",
    "entityId": "449208082",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierau37jf4joxwd32ljdq764nbd2vuuwsfmhxutkcdnk4bk37a4cc25a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":443931609}]}}}",
    "nonce": "0xaaeb6651ebe0b1e06a2cda0e1084bb9f592f40530dc31658ed8c5e4133166e51",
    "signature": "0x40e8207309bb0c5c08cd965cf54ef155b7d637b6fcf8f11665f0827ac449b3b5444c5cff4564319aad1b45677cde7d1add4b0af0ec64946bd39effaf54560c631b",
    "signer": "0x1c2B7030474cD7eD157833aCbA6053665090ABF4",
    "userId": "449208082"
  }
}