Mutes

curl "https://api.x.com/2/users/123456789/muting?\
user.fields=username,description" \
  -H "Authorization: Bearer $USER_ACCESS_TOKEN"

curl -X POST "https://api.x.com/2/users/123456789/muting" \
  -H "Authorization: Bearer $USER_ACCESS_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"target_user_id": "9876543210"}'