create a signing requestCopy Pagepost https://example.com/signaturescreate a signature request to sign the payload hashBody ParamsfinIdstringrequiredlength between 64 and 66Existing owner hex representation of a secp256k1 public key 33 bytes compressedtemplaterequiredhashListEIP712hashListTemplate objectreferenceexecutionPlanRefExecutionPlanReference objectHeadersIdempotency-Keystringhex encoding of a 32-byte payload consisting of 24 random bytes + 8-byte epoch timestamp (seconds)Responses 200successful operation 202Operation is pending 400Invalid Input 401Unauthorized 403Forbidden 404Not found 409Conflict 500Internal Server Error 502Bad Gateway 503Service Unavailable 504Gateway TimeoutUpdated 8 days ago