{
  "manageEntity": {
    "action": "Update",
    "entityId": "224019652",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3ed0d87e3094957673d8dee31983e6de6430e267d445715b27dafeafc72a906e",
    "signature": "0x4098ce7ec815c2517f3d34a49f136ca9f7914edb477961817620761676f4f5194fd122df228231b40e64af6d816957bbee3059fdb3759a5115db8840f4ddbae21b",
    "signer": "0x7964a5eF7E9a780013d3886B40ca04443D69588D",
    "userId": "224019652"
  }
}