{
    "link_batch_1" : { "links" : { "link1" : ["spine103", "spine101"],
		      		   "link2" : ["leaf2", "spine101"],
	              		   "link3" : ["leaf3", "spine101"],
		      		   "link4" : ["leaf4", "spine101"],
		      	           "link5" : ["leaf5", "spine101"] },
			"links_before" : 48,
			"links_after" : 30 },
    "link_batch_2" : { "links" : { "link1" : ["spine104", "spine102"],
		      		   "link2" : ["leaf2", "spine102"],
	              		   "link3" : ["leaf3", "spine102"],
		      		   "link4" : ["leaf4", "spine102"],
		      	           "link5" : ["leaf5", "spine102"] },
			"links_before" : 48,
			"links_after" : 30 }
}