Chapter 5.1.13 - Key Value Pair

The KeyValuePair object allows the user to specify a list of key/value pairs.

Key	Value
`key`	`[string]` Key An index for the key/value pair. Numeric value between 1 and 10 Max length: 2 bytes
`val`	`[string]` Value 150-byte alpha-numeric value Max length: 150 bytes

"opt": [
  {
    "key": "1",
    "val": "Sample value text"
  }]