Add participants to flow

Use this endpoint to add participants to a flow, accommodating anywhere from 1 to 1000 persons. When participants are added, their profiles in People are automatically created, updated or merged based on the identifiers provided.<br> If identifiers are unique, a new profile is created.<br> If identifiers match an existing profile, then that profile is updated.<br> If identifiers refer to multiple existing profiles or are not unique within the request, profiles are merged.<br> To prevent unwanted merges, ensure each participant's identifiers (<code>identifyBy</code>, <code>externalId</code> and <code>contactInformation</code>) are unique.<br> Optional parameter <code>skipMergeDuplicates</code> might be used to prevent merging to single person. Participant won't be added to campaign in this case.