{
  "manageEntity": {
    "action": "Update",
    "entityId": "691516136",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x483260ff73846f7347deb0bed8c3b697c64c3b7963f1d261631fe5478ca83d75",
    "signature": "0x7ce464ec9a9efb6be2311e9e80c4daaf52ccba8c828bb06c692d46fd868df4232c44810be18b4d835c51ab7bc838935ad19f2d9ec6695484528ca058a2689a521b",
    "signer": "0x5AF75f75Be2Eb7585A99eF3031E963015A349B8A",
    "userId": "691516136"
  }
}