t9n intrinsicGas return field as string

[winsvega]

Could you please return intrinsict gas as string in json. in case by any chance we need to handle values >int

current output

  {
    "error": "gasPrice exceeds 256 bits",
    "address": "0x54b0dfad82e7660aa185dbd371c359757fc3e656",
    "hash": "0x63cc78c654a6cc5f8ab4f17d03caef02d49ef43275282b12d432880f1192b987",
    "intrinsicGas": 21000
  }

want:

  {
    "error": "gasPrice exceeds 256 bits",
    "address": "0x54b0dfad82e7660aa185dbd371c359757fc3e656",
    "hash": "0x63cc78c654a6cc5f8ab4f17d03caef02d49ef43275282b12d432880f1192b987",
    "intrinsicGas": "0x5208"
  }