The participant who added or removed the reaction.
| Name | Type | Description | Notes |
|---|---|---|---|
| id | String | ||
| contactId | String | Zernio CRM Contact id for this sender, when one exists. | [optional] |
| name | String | [optional] | |
| username | String | [optional] | |
| picture | String | [optional] | |
| phoneNumber | String | WhatsApp only. Sender's phone number in E.164 format (with leading `+`), when available. | [optional] |