From what you've given us it's impossible to be more specific: there are several entities "colegiatura" could refer to and without knowing more details of the context we can't tell which it is.

It could be the court (i.e., the judges): "colegiatura" can refer to a tribunal colegiado, i.e., a multi-judge court. If that's what it refers to, you would just put "the court".

Example of this usage:

"SALA DE DECISIÓN LABORAL
MAGISTRADO PONENTE: FRANCISCO JAVIER TAMAYO TABARES
[..]
El proyecto preparado por el ponente fue discutido y aprobado por los demás integrantes de la Colegiatura y corresponde al siguiente,
AUTO"
http://tribunalsuperiorpereira.com/Relatoria/2009/Sala_Labor...

Another possibility is the Controlaría, the Comptroller General's Office. Example here:

"Cuerpo colegiado de la Controlaría General en el Cauca [....]
[...] el presidente de la Colegiatura doctor Lucena [...]", etc.
http://www.radiosuperpopayan.com/2016/06/27/cuerpo-colegiado...

Or it could be some professional association (colegio); these are referred to as "colegiaturas":

" El proyecto de Ley 015 de 2008, presentado por el Gobierno a la Cámara de Representantes, que crea la Colegiatura Nacional de Abogados"
https://www.elespectador.com/opinion/la-colegiatura-nacional...

Depending on the wider context there could be other possibilities too.


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Note added at 36 mins (2019-07-04 14:56:34 GMT)
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(Needless to say, all my references are from Colombia.)