{
  "manageEntity": {
    "action": "Update",
    "entityId": "406716751",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x39b459e1907b28dde3f9e603e9223e1e398f75e75e260e13c3936dd204c12250",
    "signature": "0x8a69b6a1fb18a451a29b2b8533d6812ae4cef6051257e84e3999bc500bbf48f1218d1813ea6fcab0197c2d7fcb6e0c1bebf8c915ed5098b2e225bfd203c49d361c",
    "signer": "0x31eba27Ca105bABB3B8590b9A71b07C6d1e7c747",
    "userId": "406716751"
  }
}