MAGNA-SIRGAS 2018 - EPSG:20046

WKT

GEOGCS["MAGNA-SIRGAS_2018", 
	DATUM["Marco_Geocentrico_Nacional_de_Referencia_2018", 
		SPHEROID["GRS_1980", 6378137.0, 298.257222101]], 
	PRIMEM["Greenwich", 0.0], 
	UNIT["Degree", 0.0174532925199433]]

WKT2

GEOGCRS["MAGNA-SIRGAS_2018", 
	DATUM["Marco_Geocentrico_Nacional_de_Referencia_2018", 
		ELLIPSOID["GRS_1980", 6378137.0, 298.257222101]], 
	PRIMEM["Greenwich", 0.0], 
	CS[ellipsoidal, 2], 
	AXIS["Latitude (lat)", north, 
		ORDER[1]], 
	AXIS["Longitude (lon)", east, 
		ORDER[2]], 
	ANGLEUNIT["Degree", 0.0174532925199433], 
	ID["EPSG", "20046"]]

Data from @esri/proj-codes

{
  "wkid": 20046,
  "latestWkid": 20046,
  "macro": "PE_GCS_MAGNA_SIRGAS_2018",
  "name": "MAGNA-SIRGAS_2018",
  "wkt": "GEOGCS[\"MAGNA-SIRGAS_2018\",DATUM[\"Marco_Geocentrico_Nacional_de_Referencia_2018\",SPHEROID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]]",
  "wkt2": "GEOGCRS[\"MAGNA-SIRGAS_2018\",DATUM[\"Marco_Geocentrico_Nacional_de_Referencia_2018\",ELLIPSOID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433],ID[\"EPSG\",\"20046\"]]",
  "description": "MAGNA-SIRGAS 2018",
  "authority": "EPSG",
  "version": "10.082(13.2.0)",
  "deprecated": "no",
  "areaname": "Colombia",
  "extent": {
    "slat": -4.23,
    "nlat": 15.51,
    "llon": -84.77,
    "rlon": -66.87
  }
}