{
  "manageEntity": {
    "action": "Update",
    "entityId": "508931608",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x79bea6101e9e3078085b483c4e0c303ba318fd32d633ff5f7eb552276732d1bf",
    "signature": "0xfc9a4cbca1bd8a1823708c20a7fd81208389af0f72a7c7ca918ec497663989fd51b0aa65c69415f16ecf85d69eab8e49b071d3ba730ce73fe2a0e863d36457f41c",
    "signer": "0x69163Aed5B32EC7f6C8a1e4aDEd7fD7E298F9521",
    "userId": "508931608"
  }
}