Fix function logic to return new messages

Question

My code:

def get_messages(token:str, channel_id:int, last_message_id:int) -> list:
    """Returns a list of dicts containing new messages data"""
    
    headers = {
        'authorization': token,
        }
    dict_with_needed_message = {}
    messages_amount = 50
    while len(dict_with_needed_message) == 0:
        r = requests.get(f"https://website/api/channels/{channel_id}/msgs?limit={messages_amount}", headers=headers)
        list_of_dicts = json.loads(r.text)
        dict_with_needed_message = list(filter(lambda find_dict: find_dict['id'] == str(last_message_id), list_of_dicts))[0]
        if dict_with_needed_message:
            dict_index = list_of_dicts.index(dict_with_needed_message)
            if dict_index != 0:
                new_messages_list = list_of_dicts[dict_index-1::-1]
            else:
                new_messages_list = []
        else:
            messages_amount += 50
    return new_messages_list

It already looks non-Pythonic, and the condition for finding dict_with_needed_message does not work correctly (the resulting dictionary may have a nested 'id' key, needed to check only the value of the first key of the entire dictionary).

What should the function do:

• Input data remains the same
• Make a request with the default number of messages = 50
• In the received data, find the dictionary number, the value of the first key in which = str(last_message_id)
• If it's not in the list, then the number of messages is increased by 50 and a second request is made. So until the number of the desired message is found
• By the received number, make a slice of the list, getting a list of messages coming after the found one and reflect it in reverse order
• Return this resulting list

Help correct my code or suggest a better option. Thank you.

Example of list_of_data structure:

[
  {
    'id': '961627935247331329',
    'type': 19,
    'content': 'Hello world!',
    'channel_id': '737700125492772863',
    'author': {
      'id': '123456789123456789',
      'username': 'TestUser',
      'avatar': 'd0bd70431e24610fd067109f28654a5b',
      'discriminator': '2806',
      'public_flags': 64
    },
    'attachments': [
      
    ],
    'embeds': [
      
    ],
    'mentions': [
      
    ],
    'mention_roles': [
      
    ],
    'pinned': False,
    'mention_everyone': False,
    'tts': False,
    'timestamp': '2022-04-07T14:06:05.946000+00:00',
    'edited_timestamp': None,
    'flags': 0,
    'components': [
      
    ],
    'message_reference': {
      'channel_id': '737700125492772863',
      'guild_id': '724241782833152050',
      'message_id': '961550841163157544'
    },
    'referenced_message': {
      'id': '961550841163157544',
      'type': 0,
      'content': 'test message by testuser',
      'channel_id': '737700125492772863',
      'author': {
        'id': '123456789123456789',
        'username': 'TestUser',
        'avatar': 'd0bd70431e24610fd067109f28654a5b',
        'discriminator': '2806',
        'public_flags': 64
      },
      'attachments': [
        
      ],
      'embeds': [
        
      ],
      'mentions': [
        
      ],
      'mention_roles': [
        
      ],
      'pinned': False,
      'mention_everyone': False,
      'tts': False,
      'timestamp': '2022-04-07T08:59:45.284000+00:00',
      'edited_timestamp': None,
      'flags': 0,
      'components': [
        
      ]
    }
  },
  {
    'id': '961550841163157544',
    'type': 0,
    'content': 'new message from testuser 123',
    'channel_id': '737700125492772863',
    'author': {
      'id': '123456789123456789',
      'username': 'TestUser',
      'avatar': 'd0bd70431e24610fd067109f28654a5b',
      'discriminator': '2806',
      'public_flags': 64
    },
    'attachments': [
      
    ],
    'embeds': [
      
    ],
    'mentions': [
      
    ],
    'mention_roles': [
      
    ],
    'pinned': False,
    'mention_everyone': False,
    'tts': False,
    'timestamp': '2022-04-07T08:59:45.284000+00:00',
    'edited_timestamp': None,
    'flags': 0,
    'components': [
      
    ]
  },
  {
    'id': '961315800499761232',
    'type': 0,
    'content': 'abcdefgh',
    'channel_id': '737700125492772863',
    'author': {
      'id': '123456789123456789',
      'username': 'TestUser',
      'avatar': 'd0bd70431e24610fd067109f28654a5b',
      'discriminator': '2806',
      'public_flags': 64
    },
    'attachments': [
      
    ],
    'embeds': [
      
    ],
    'mentions': [
      
    ],
    'mention_roles': [
      
    ],
    'pinned': False,
    'mention_everyone': False,
    'tts': False,
    'timestamp': '2022-04-06T17:25:47.223000+00:00',
    'edited_timestamp': None,
    'flags': 0,
    'components': [
      
    ]
  },
  {
    'id': '961299163352559718',
    'type': 0,
    'content': 'foo bar qwerty 123',
    'channel_id': '737700125492772863',
    'author': {
      'id': '123456789123456789',
      'username': 'TestUser',
      'avatar': 'd0bd70431e24610fd067109f28654a5b',
      'discriminator': '2806',
      'public_flags': 64
    },
    'attachments': [
      
    ],
    'embeds': [
      
    ],
    'mentions': [
      
    ],
    'mention_roles': [
      
    ],
    'pinned': False,
    'mention_everyone': False,
    'tts': False,
    'timestamp': '2022-04-06T16:19:40.618000+00:00',
    'edited_timestamp': None,
    'flags': 0,
    'components': [
      
    ]
  }
]