Access-Control-Allow-Origin: *
Access-Control-Allow-Headers: *
Access-Control-Allow-Methods: POST, OPTIONS
Content-Type: application/json
"signerWallet": "0x73BCEb1Cd57C711feaC4224D062b0F6ff338501f",
"signerToken": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"signerAmount": "100000000",
"senderToken": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
"senderAmount": "1000000000000000000",
"r": "0x67e0723b0afd357d4f28523bf633dfee16e0eab2f3cbcf8ce1afd32a035d2764",
"s": "0x1b71e6e633b3334fc88faf4ec0ca1b7611883bc0de4df7024abec07af78b97c3"