Set up bonuses

Set up bonus payments to one or more participants/submissions in a study. You need the study id, the participant|submission ids and the request in CSV format. The csv_bonuses field needs to be structured in the format of either: - `<participant_id>,<amount>\n`. - `<submission_id>,<amount>\n`. **Note: The amount will be in the study currency. The amount should be a decimal value, e.g. 1.50 for £1.50.** Warning: An amount of 30 will pay £/$30.00. As an example, `60ffe5c8371090c7041d43f8,4.25` would be a bonus of £4.25 for participant 60ffe5c8371090c7041d43f8 in a study with GBP currency. Setting up a bonus payment does not actually pay them, to do so check [/api/v1/bulk-bonus-payments/{id}/pay/](#tag/Bonuses/paths/~1api~1v1~1bulk-bonus-payments~1%7Bid%7D~1pay~1/post) The submission and participant IDs need to have taken part in the study in order for this call to be successful. If not, you will get a "400" HTTP response back, which explains which IDs are incorrect.