{
  "manageEntity": {
    "action": "Save",
    "entityId": "1105650357",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xcf47787cfe80593b1a6891b40d6fbfa22d2e2a89a0cff79b6be39addb647f732",
    "signature": "0xb69bcd0594328183f2231d3155ae7aae55e7a73359e0a005325a33e9b5f399cd755abf4ff2f28ce7ba379b66c4fa2543206629cdc74bee9e44677df2569acd551b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}