"it is posted via rails, in the rails log here is an example of how it looks: Parameters: { list_items\"=>{open_positions\"=>[{\\id\\:83,\\position\\:0},{\\id\\:82,\\posit??????ion\\:1}], done_positions\"=>[{\\id\\:85,\\position\\:0},{\\id\\:84,\\position\\:1}]}" . . . .