{
  "manageEntity": {
    "action": "Update",
    "entityId": "323879851",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera63xpvxidqebfbbdgqveslwrhee2jlwlshjfhhvkdf26lwk2dt7fa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":320679866},{\"type\":\"playlist\",\"playlist_id\":55347773}]}}}",
    "nonce": "0xfc34f8550c5b6de2038bb40189d714682c182d5b0bc4ad0b805d4a90caa0a593",
    "signature": "0xdb01d0683c0205474fac598f1c67a796292f5f8eee584ce7e2f9c37021c69f5f0e19d3a6adb5e74fbf0800e474cc15970a66746743c8d9d475568ac657fc7f0e1c",
    "signer": "0x12aD0F6A7Bf3ef1Fb0FFE6e1eF9E50BCa3149Af5",
    "userId": "323879851"
  }
}