Changes to Squash-merge a pull request

removed the agent_switch_saga enum value from the reporting_owner response property for the response status 400

removed the agent_switch_saga enum value from the reporting_owner response property for the response status 404

removed the agent_switch_saga enum value from the reporting_owner response property for the response status 409

removed the agent_switch_saga enum value from the reporting_owner response property for the response status 422

removed the agent_switch_saga enum value from the reporting_owner response property for the response status 501

added the required property state to the response with the 200 status

added the required property stateChangedAt to the response with the 200 status

added the optional property reporting_owner to the response with the 400 status

added the optional property reporting_owner to the response with the 404 status

added the optional property reporting_owner to the response with the 409 status

added the optional property reporting_owner to the response with the 422 status

added the optional property reporting_owner to the response with the 501 status

added required request body

added the non-success response with the status 400