Problem connecting API with token

Hello,

I need to connect in API with method POST and authorization token, but the response is problem with annonymous authentication.

I tried with M language:

let
content = "{""filtro_body"": {""assunto"": """", ""codigo"": """", ""nome_contato"": """", ""email_conferencia"": """", ""data_criacao"": """", ""data_solucao"": """", ""cliente_token"": """", ""cliente_id"": """", ""status"": """", ""tecnico"": """", ""cliente"": """", ""mesa_trabalho"": """", ""categoria_primaria"": """", ""categoria_secundaria"": """", ""total_avaliacao"": """", ""descricao_avaliacao"": """", ""setor"": """", ""tipo_ticket"": """", ""dispositivo"": """", ""possui_avaliacao"": true, ""prioridade"": 1, ""data_hora_criacao_inicial"": """", ""data_hora_criacao_final"": """" } }",


Source = Json.Document(Web.Contents("https://apiintegracao.milvus.com.br/api/chamado/listagem",
                       [Headers=[#"Authorization"="token", 
                                 #"apikey" = "KEY123", 
                                 #"filtro_body" = "{}",
                                 #"ContentType"="application/json"], 
                                  
                        ManualStatusHandling = {404, 400},
                        
                       
                        Content=Text.ToBinary(content)]))

in
Source

And I tried with Web Data Source, and not works:

The API link I'm trying to connect:

https://developers.milvus.com.br/#api-Chamado-listagemChamados

Anyone can help me, please?

Sorry about my English level.