hello, may i know what are the apis that i would need to use in order to have a chat through api? i've tried to create conversation (POST /v1/chat/conversations) with the following

{
  "channel": "channel",
  "tags": {
    "tag1": "111",
    "tag2": "222",
    "tag3": "333"
  },
  "integrationName": "webhook"
}

and i get an error

{
  "id": "err_1698224666567xAD1C5E89",
  "code": 400,
  "type": "ReferenceNotFound",
  "message": "Integration Definition \"6d68151a-186e-49c6-a128-940f9a60e673\" doesn't have the channel \"channel\""
}

i also tried listing my integrations, unfortunately the results are empty