{
  "manageEntity": {
    "action": "Update",
    "entityId": "787610173",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xebb4720de70152cd7e6f27e7914ad91303704019e63b5e33c518a8d7b6953c13",
    "signature": "0xd902903ddefa721466a39016c9879d509d406122431e4a67b596baa0dea5054a10a0732984067d4931d1f0918644772478078229aa4b043a2d66991d7f704fcc1c",
    "signer": "0x14255ecABa20F3DC6b53A58649FC750c0F6b996C",
    "userId": "787610173"
  }
}