{
  "manageEntity": {
    "action": "Update",
    "entityId": "224019652",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0a884463b37951e6a9e40db562ed28b902f24cca13863902d09c06090980ea54",
    "signature": "0xff5430c959ca497a80845c04fa40f4c6aa044f9e8ff7e3f0b35b88a61cf326f54f3307d76fb390549230f481f979b47676290bddbdcaee46dbd6703eb246d1b61c",
    "signer": "0x7964a5eF7E9a780013d3886B40ca04443D69588D",
    "userId": "224019652"
  }
}