{
  "manageEntity": {
    "action": "Save",
    "entityId": "1844044678",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x02cb1320abf5d8cddb559fa20491364b484cd14786a0ebf624aefe9fc7227a2e",
    "signature": "0x18c6266d752dac83093fb1d62a30daea18611ec9cabf6750b6772fc18f97e1280693d9945be5e350239c547e44cfe944da4262dc794018d1f5b46740c5a17bca1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}