message: remove separators to use json.dumps as default
diff: @@ -145,7 +145,7 @@ class PaymentTree:
  columns["proof"].append(self.get_hex_proof(leaf))
  columns["explanationId"].append(explanation_id)
  columns["explanationData"].append(
  - json.dumps(payment["explanationData"], separators=(",", ":"))
  + json.dumps(payment["explanationData"])
  )
  return pa.table(data=columns, schema=schema)
  