{
  "manageEntity": {
    "action": "Update",
    "entityId": "640375784",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x68ee5f246a6f82596cc3f76ff641778fd307110b098c059524bbae8d90485881",
    "signature": "0x26c9ec8549e27ef34b4ba98b9af4cb7e7c2e020485a2b2cc42df69ea1419edf732fb441a08618af99401ae8f7bf5a2ee25d607203727bf993e227aa7c20befdf1c",
    "signer": "0xAD70397544Ee4e82a6AB7EA8365282a449a99DBD",
    "userId": "640375784"
  }
}