@type t() :: %DiodeClient.MetaTransaction{
  call: binary() | nil,
  chain_id: integer() | nil,
  deadline: integer() | nil,
  from: binary() | nil,
  gaslimit: integer() | nil,
  nonce: integer() | nil,
  signature: {integer(), integer(), integer()} | nil,
  to: binary() | nil,
  value: integer() | nil
}