curl "https://app.tatango.com/api/v2/lists/<ID>/opt_in_settings" -d '{"opt_in_type":"double","opt_in_requests":[{"collected_data":"zip_code","request_message":"Reply with zip code for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com","retry_message":"Incorrect zip code. Reply with zip code for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com","follow_up":true,"follow_up_hour":2,"no_response_message":"Reply with zip code for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com","opt_in_message":null,"second_opt_in_message":null,"success_action":"nextrequest"},{"collected_data":"email_address","request_message":"Thank you! Reply with email address for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com","retry_message":"Incorrect email. Reply with email address for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com","follow_up":true,"follow_up_hour":24,"no_response_message":"Reply with email address for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com","opt_in_message":null,"second_opt_in_message":null,"success_action":"nextrequest"},{"collected_data":"first_name","request_message":"Thank you! Reply with first name for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com","retry_message":"Incorrect name. Reply with your first name for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com","follow_up":true,"follow_up_hour":24,"no_response_message":"Reply with your first name for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com","opt_in_message":null,"second_opt_in_message":null,"success_action":"nextrequest"},{"collected_data":"yes","request_message":"Thank you! Reply YES for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com","retry_message":"Response not understood. Reply YES for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com","follow_up":false,"follow_up_hour":null,"opt_in_message":"ACME Retail: You agreed to receive recurring SMS/MMS msgs. Txt STOP 2 end, HELP 4 help. Msg&data rates may apply. Terms apply 12345-info.com","second_opt_in_message":"ACME Retail: Welcome back! You agreed to receive recurring SMS/MMS msgs. Txt STOP 2 end, HELP 4 help. Msg&data rates may apply. Terms apply 12345-info.com","success_action":"optinsubscriber"}]}' -X PUT \
  -H "Accept: application/json" \
  -H "Content-Type: application/json" \
  -u emailaddress@mydomain.com:my_api_key \
  -H "Host: example.org" \
  -H "Cookie: "

{
  "status": "Opt in settings updated",
  "opt_in_type": "double",
  "opt_in_requests": [
    {
      "bypass_opt_in_response": false,
      "collected_data": "zip_code",
      "created_at": "2016-09-07T14:10:41-07:00",
      "follow_up": true,
      "follow_up_hour": 2,
      "id": 1,
      "list_id": 10,
      "no_response_message": "Reply with zip code for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com",
      "opt_in_message": null,
      "request_message": "Reply with zip code for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com",
      "retry_message": "Incorrect zip code. Reply with zip code for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com",
      "second_opt_in_message": null,
      "success_action": "nextrequest",
      "updated_at": "2016-09-07T14:10:41-07:00"
    },
    {
      "bypass_opt_in_response": false,
      "collected_data": "email_address",
      "created_at": "2016-09-07T14:10:41-07:00",
      "follow_up": true,
      "follow_up_hour": 2,
      "id": 2,
      "list_id": 10,
      "no_response_message": "Reply with email address for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com",
      "opt_in_message": null,
      "request_message": "Thank you! Reply with email address for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com",
      "retry_message": "Incorrect email. Reply with email address for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com",
      "second_opt_in_message": null,
      "success_action": "nextrequest",
      "updated_at": "2016-09-07T14:10:41-07:00"
    },
    {
      "bypass_opt_in_response": false,
      "collected_data": "first_name",
      "created_at": "2016-09-07T14:10:41-07:00",
      "follow_up": true,
      "follow_up_hour": 2,
      "id": 3,
      "list_id": 10,
      "no_response_message": "Reply with your first name for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com",
      "opt_in_message": null,
      "request_message": "Thank you! Reply with first name for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com",
      "retry_message": "Incorrect name. Reply with your first name for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com",
      "second_opt_in_message": null,
      "success_action": "nextrequest",
      "updated_at": "2016-09-07T14:10:41-07:00"
    },
    {
      "bypass_opt_in_response": false,
      "collected_data": "yes",
      "created_at": "2016-09-07T14:10:41-07:00",
      "follow_up": true,
      "follow_up_hour": 2,
      "id": 4,
      "list_id": 10,
      "no_response_message": null,
      "opt_in_message": "ACME Retail: You agreed to receive recurring SMS/MMS msgs. Txt STOP 2 end, HELP 4 help. Msg&data rates may apply. Terms apply 12345-info.com",
      "request_message": "Thank you! Reply YES for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com",
      "retry_message": "Response not understood. Reply YES for recurring autodialed SMS/MMS marketing msgs. No purchase rqd. Msg&data rates may apply. Terms apply 12345-info.com",
      "second_opt_in_message": "ACME Retail: Welcome back! You agreed to receive recurring SMS/MMS msgs. Txt STOP 2 end, HELP 4 help. Msg&data rates may apply. Terms apply 12345-info.com",
      "success_action": "optinsubscriber",
      "updated_at": "2016-09-07T14:10:41-07:00"
    }
  ]
}