{
  "manageEntity": {
    "action": "Update",
    "entityId": "602082495",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x44a01cf071834bbf19cd413cb936eff1fe53293200052cf64a556e0969ac1c04",
    "signature": "0x683e08ff6068bf92ef44acece8908b7ba34c4a010ef7a639c8a4becdb9825bec2c5927bfe5fd6e780dce09cc4fc8da21b825b0a6df50974aab4fd0980c29e0cb1b",
    "signer": "0x53071d47d055802863E26EEcCc8fdc980917a696",
    "userId": "602082495"
  }
}