Get Data from Rest Api with JWT

Hi everyone,

I'm stuck with my limited knowledge here, because i need to get access to the data from an Rest API with Json Web Token.

They send me 3 different url:

1. EndPoint of tokens : https://xxxxx.yyyyy.com/vftoken/oauth/token

with this parameters

UserName=vfrest&Password=t3sting&grant_type=password

the result must be a chain in format "JSON Array" with 3 fields:

a) access_token (dinamic value)

b) token_type 

c) expires_in

2. Endpoint for test https://xxxxx.yyyyyy.com/vfrest/api/Prueba/Prueba2

a) KEY ="Autorization"

b) VALUE = Bearer "access_token"

c) Content-Type = application/x-www.form-urlencoded

3. Endpoint for data  https://xxxxx.yyyyy.com/vfrest/api/data

the result must be a chain in format "JSON Array"

BUT... i try with the solution in Pull data from a REST API Authentication and doesn't work with my poor programming skills 

I be really thankfull if someone helpme.