curl --request POST \
--url https://api.truthstamp.ai/recipient/getChallenge \
--header 'Content-Type: application/json' \
--header 'x-api-key: <api-key>' \
--data '
{
"signatureCommitmentString": {
"z1": "<string>",
"a1": "<string>",
"b1": "<string>",
"a2": "<string>",
"c2": "<string>",
"s2": "<string>",
"r1": "<string>"
},
"blindedMessage": "<string>",
"commonInfo": "<string>",
"publicKey": "<string>"
}
'