You've made a successfull MITM-attack someone sending a request to transfer funds. The plaintext of the message looks like
0000000: 7b0a 0922 7265 7175 6573 7422 3a20 2273 {.."request": "s
0000010: 656e 642d 6361 7368 222c 0a09 2274 6f2d end-cash",.."to-
0000020: 6163 6322 3a20 2231 3233 3435 3637 3822 acc": "12345678"
0000030: 2c0a 0922 616d 6f75 6e74 223a 2022 2431 ,.."amount": "$1
0000040: 3030 302e 3030 220a 7d0a 0000 0000 0000 000.00".}.......
And the encrypted request is:
0000000: 78b9 cbd7 5a7a 16ad ebc3 9762 75a5 54a6 x...Zz.....bu.T.
0000010: b9a8 1676 050d 11f2 ee2f 98ed 4418 c927 ...v...../..D..'
0000020: 1c9d abac 1c08 05d2 f922 493f 9861 2bd6 ........."I?.a+.
0000030: 9a6c 2d71 abcb 73ce ff0b 773f d6d2 d496 .l-q..s...w?....
0000040: 4475 9f9c 056e 7376 6515 959f 3ab2 43b8 Du...nsve...:.C.
0000050: 1e0b 49f4 530f 3657 2c08 2c14 6ffc d346 ..I.S.6W,.,.o..F
Your assignment is to change the account-number (12345678) to your own account number (13371337). The token for this assignment is the changed line in the encrypted message, it must be entered in exactly this format:
0000030: 9a6c 2d71 abcb 73ce ff0b 773f d6d2 d496