This is the same as rsa-pss-sha256.pem, except the signature was generated
with a salt length of 33 instead of 32, while the algorithm still reports
the standard value of 32.

The public key in SPKI form:
$ openssl pkey -in key.pem -pubout
-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAn56hwS55y9JG5gXkTQLX
m/Q4HSJdP/kECgztMMQtqgiv+QdL0J5M7bQNbUK7ZhZt5pES5T0HjJcIENBvhXFz
UZ3rBOMp4yESFLWoSL0quL0DAaRX/ZuZqT+Ow6LPdkwlv1JpKh03ylqxCGbw1bIF
IEsFrp6QDndSPVI1ifd2QfYe+fdRQuF8emaGu50OKRSgziQB50JHKD0zRsh1cgUc
QTyGUiFj2ndFXw1APzylU2+ouYurmN3ZCrvcP2J/qgQdAzDYRQ/bq/v7LNYQc+Gu
d+EIzE3+9spybnWRi2aLrnGwwBCZs/bqc66waK0pzH8z/mDwbB2ZSIal6ARF0iWU
XQIDAQAB
-----END PUBLIC KEY-----

The signing algorithm:

$ openssl asn1parse -i < [ALGORITHM]
    0:d=0  hl=2 l=  65 cons: SEQUENCE          
    2:d=1  hl=2 l=   9 prim:  OBJECT            :rsassaPss
   13:d=1  hl=2 l=  52 cons:  SEQUENCE          
   15:d=2  hl=2 l=  15 cons:   cont [ 0 ]        
   17:d=3  hl=2 l=  13 cons:    SEQUENCE          
   19:d=4  hl=2 l=   9 prim:     OBJECT            :sha256
   30:d=4  hl=2 l=   0 prim:     NULL              
   32:d=2  hl=2 l=  28 cons:   cont [ 1 ]        
   34:d=3  hl=2 l=  26 cons:    SEQUENCE          
   36:d=4  hl=2 l=   9 prim:     OBJECT            :mgf1
   47:d=4  hl=2 l=  13 cons:     SEQUENCE          
   49:d=5  hl=2 l=   9 prim:      OBJECT            :sha256
   60:d=5  hl=2 l=   0 prim:      NULL              
   62:d=2  hl=2 l=   3 cons:   cont [ 2 ]        
   64:d=3  hl=2 l=   1 prim:    INTEGER           :20
-----BEGIN ALGORITHM-----
MEEGCSqGSIb3DQEBCjA0oA8wDQYJYIZIAWUDBAIBBQChHDAaBgkqhkiG9w0BAQgw
DQYJYIZIAWUDBAIBBQCiAwIBIA==
-----END ALGORITHM-----

-----BEGIN DATA-----
x/UnD8pyX5vRn1GajXzKPMXAeQJAKfO65RD5sCFA/iOJCOT2wY8HqJxofIaEZpsfHbK6+SUaPIK
frMtJMIThbsnijViGgHSl1iIWZ91uUo0W/iyfPbTPr2xNzoyEOa84zqqqnOLsrnvI9KWlXjv5bf
nNV1xPnLMnlRuM3+QIcWg=
-----END DATA-----

The signature was generated with:
$ openssl dgst -sign key.pem -sha256 -sigopt rsa_padding_mode:pss \
    -sigopt rsa_pss_saltlen:33 < [DATA] > [SIGNATURE]

Then the signature was wrapped in a BIT STRING.

$ openssl asn1parse -i < [SIGNATURE]
    0:d=0  hl=4 l= 257 prim: BIT STRING   
-----BEGIN SIGNATURE-----
A4IBAQB4R+AnrWUH+TvyBU3yR1GP1ghodbwUZdyJfG1rqzEqpY/MJtsd1YM9bC9q
FqHao1+idLj+WSl91hbtZAEtNb0TDdXkO+iattPYsTBAeLm70A7DbqwM7s/1rTp0
KJ4QFOJe05wYO+p/zHZ4Oiyhx2bCx+8J1FLlYEtwR0NhwRwPflVO7TNZC1l40iqk
iyxsJrXsibuFnFnBe6BytBdlKF/CHFuve6z5aLauuuQtA17I6YRZ4cdKceD9I3Hs
NVhe+V1V10YoMDx3AywQTnaM+Au+VoxHU6oh9KP5lrrzBhPZPDtzfF++4Ag2Vd2O
GFvPoL8xTp3S8QG5iVs90BkW8GvL
-----END SIGNATURE-----