Invalid IP Error? Please Help

[2022-08-24 12:03:56] ERROR: Form 7170 > Mailchimp API error: 400 Bad Request. Invalid Resource. The resource submitted could not be validated.
– ip_signup : This value is not a valid IP. Valid IPs have a format of W.X.Y.Z where each letter represents a number between 0-255.
Request:
POST https://us12.api.mailchimp.com/3.0/lists/fa6b44cc4c/members
{“status”:”pending”,”email_address”:”andr**@ko*************.com”,”interests”:{},”merge_fields”:{},”email_type”:”html”,”ip_signup”:”174.193.131.48, 127.0.0.1, 184.168.224.134, 0.0.0.0, 174.193.131.48″,”tags”:[]}
Response:
400 Bad Request
{“type”:”https://mailchimp.com/developer/marketing/docs/errors/”,”title”:”Invalid Resource”,”status”:400,”detail”:”The resource submitted could not be validated. For field-specific details, see the ‘errors’ array.”,”instance”:”20c75c70-83da-9983-e3cf-0048fec5d4a7″,”errors”:[{“field”:”ip_signup”,”message”:”This value is not a valid IP. Valid IPs have a format of W.X.Y.Z where each letter represents a number between 0-255.”}]}