{
  "manageEntity": {
    "action": "Update",
    "entityId": "424828409",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5d8cb9c8c380638d61e46a41d6ed5d4cf1fd1448690cd36b02d23d79507aed38",
    "signature": "0xfda878be083db4f4e37f9a8b185e0b7e6f45cf2211f3e405293a1cb49893a24a50a0e175965193a396a196546aa263c69affc71c63c23c417a7410e88069059a1b",
    "signer": "0xd9e965D34dbE54B945Bab2856092CC219657d5dE",
    "userId": "424828409"
  }
}