{
  "manageEntity": {
    "action": "Update",
    "entityId": "404887599",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x41dcb97cca6a310298d590eee1dec11a127558754ee2f901631d050a87c200f2",
    "signature": "0xed6561cfc439bc1d2c2ceca548204f4889f58687cfac9fa60409f44428414bbc69f0a8550c9fef67ff483302ef205fffa8d108c71fc476d810b58afc0d1772271b",
    "signer": "0x8103D5e9c3f9Ab21620BC430d56a4aC96262d36C",
    "userId": "404887599"
  }
}