{
  "manageEntity": {
    "action": "Update",
    "entityId": "752219501",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x01a0052d4d992b489e86054651d3272fcf7789213d1f93d3992a326c01c5448c",
    "signature": "0x2aaaa8fbaa5ca199c82e46285579902d8386f878a51836deefe1b78b72ecf0c10f5b1d09b1c166cba151141094818a90c753f3e8ca659575ebe9e8b4151b32441b",
    "signer": "0x7dcc9b6c9444AB64901FcbfBdf9b8e585ea37b3F",
    "userId": "752219501"
  }
}