PreAuthorizedCodeGrant
pre-authorized_codestringrequired
Example: 
pre-auth-code-xyztx_code object
input_modestring
Example: 
textlengthnumber
Example: 
6descriptionstring
Example: 
Enter transaction codeintervalnumber
Example: 
30authorization_serverstring
Example: 
authorization-server-samplePreAuthorizedCodeGrant
{
  "pre-authorized_code": "pre-auth-code-xyz",
  "tx_code": {
    "input_mode": "numeric",
    "length": 4,
    "description": "Sample transaction code"
  },
  "interval": 30,
  "authorization_server": "authorization-server-sample"
}