{
  "manageEntity": {
    "action": "Update",
    "entityId": "421395845",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x808aafd1954807adea0721c14a065467d99f9f869ff03547209d32d1facd0225",
    "signature": "0xe56b491f1a36c5530d3388741afc6c84c0b548ac874cb91dd17675edf83b15c92df04492489dc58bec1b1ba1d0fab770a51c8d8fcb0d9fb8edd11253ccbcbcc31b",
    "signer": "0xda96A17BA0D35C1921a9252fC5A4e1C7865f4e35",
    "userId": "421395845"
  }
}