null
{"lead_id":"lead_id1","form_id":"form_id1","user_column_data":[{"column_name":"Full Name","string_value":"John Doe"},{"column_name":"User Phone","string_value":"12345678"},{"column_name":"User Email","string_value":"abc@123.com"}],"api_version":"1.0","google_key":"NIYO_23sdfIE789G2NWEQASDSH4OwTnoQ2kCqvF"}
{"lead_id":"lead_id1","form_id":"form_id1","user_column_data":[{"column_name":"Full Name","string_value":"John Doeff"},{"column_name":"User Phone","string_value":"12345678ee"},{"column_name":"User Email","string_value":"abc@123.com"}],"api_version":"1.0","google_key":"NIYO_23sdfIE789G2NWEQASDSH4OwTnoQ2kCqvF"}
{"lead_id":"lead_id1","form_id":"form_id1","user_column_data":[{"column_name":"Full Name","string_value":"John Doeff"},{"column_name":"User Phone","string_value":"12345678ee"},{"column_name":"User Email","string_value":"abc@123.com"}],"api_version":"1.0","google_key":"NIYO_23sdfIE789G2NWEQASDSH4OwTnoQ2kCqvF"}
{"lead_id":"lead_id1","form_id":"form_id1","user_column_data":[{"column_name":"Full Name","string_value":"John Doeff"},{"column_name":"User Phone","string_value":"12345678ee"},{"column_name":"User Email","string_value":"abc@123.com"}],"api_version":"1.0","google_key":"NIYO_23sdfIE789G2NWEQASDSH4OwTnoQ2kCqvF"}
{"lead_id":"lead_id1","form_id":"form_id1","user_column_data":[{"column_name":"Full Name","string_value":"John Doeff"},{"column_name":"User Phone","string_value":"12345678ee"},{"column_name":"User Email","string_value":"abc@123.com"}],"api_version":"1.0","google_key":"NIYO_23sdfIE789G2NWEQASDSH4OwTnoQ2kCqvF"}
{"lead_id":"lead_id1","form_id":"form_id1","user_column_data":[{"column_name":"Full Name","string_value":"John Doeff"},{"column_name":"User Phone","string_value":"12345678ee"},{"column_name":"User Email","string_value":"abc@123.com"}],"api_version":"1.0","google_key":"NIYO_23sdfIE789G2NWEQASDSH4OwTnoQ2kCqvF"}

Default data
{"leadid":"lead_id1","form_id":"form_id1","campaign_id":"","emailaddress":"abc@123.com","fullname":"John Doeff","phone":"12345678ee","gcl_id":""}