Headers
Body
application/json
Response
Success
Example:
"0729a580-2240-11e6-9eb5-0002a5d5c51b"
Example:
"0x8a726dc1d89dc0b10a27130c562cce2d346f2bbac1af683d9b55632825e4abc0480bcf25276452a3c076f2a5d756c6deedd552cfc343dd34a5953835f4d7c8a71c"
Tip tx index wrt to the anchor tx.