{
  "endpoint": "/animate-with-text-v3",
  "body": {
    "first_frame": {
      "type": "base64",
      "base64": "[3304 base64 chars]",
      "format": "png"
    },
    "action": "side-view running walk cycle, melee-ready stance, feet planted clearly, no camera movement",
    "frame_count": 8,
    "no_background": true,
    "seed": 1662687063
  }
}