{
  "manageEntity": {
    "action": "Update",
    "entityId": "377016458",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3994d20da7b369612ee7ca5b44fdf3ac7226d630542de17a6b114b046f3bc5e4",
    "signature": "0xa80e7e66386a15ac7eb45b6ff01c7d9eae2f0e4ebd4f401e884308c2e782e18231a43fdbfe5c5a94fa7fe61ab59987764c25830296e2c851045c3aeb70543c1d1b",
    "signer": "0x3F595cc9681E304c2Beb91BDEaD7E4B7c8A99caD",
    "userId": "377016458"
  }
}