Retomar disparo

Endpoint

POST /v1/broadcasts/:id/resume

Escopo necessário: write:broadcasts Transição de status: paused → running

curl -X POST https://api.socialsell.ai/v1/broadcasts/664t3s4t5u6v7w8x9y0z1a2b/resume \
  -H "Authorization: Bearer sk_live_..."

Retorna HTTP 200 com o disparo no status running.