{
  "manageEntity": {
    "action": "Update",
    "entityId": "942357794",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xcc36905fa3453cde1ded10e81aeb7220217efe0c06566c50b696fe4b329eb60d",
    "signature": "0x4bec41fb6fe5f232ddd1b907050527380982b7b94f12413b56a57540fcb85af950404292c8edfcd7850b02d8af23e160ec99576a0a0f7a5a560a99c05d7b82fb1c",
    "signer": "0xE5A5B764397cF23bFc9dC77c74F70674BBC4220d",
    "userId": "942357794"
  }
}