{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc417f7fb898cf0828f9baa3b1a463dd512882078435525f26c29a055c9ead823",
    "signature": "0x0e364d96ae41f636a0c52f1c6f77052552c26487664c94fbe454ac3f7ffcb3bf0cf616a424f81e2838d0d9872dbdb0c639ed0af1fb5e885bccd5830c06a845a41c",
    "signer": "0xA2ba31cfEDf1e9e2b22EdeE7fBcC3A5da9C1a3f1",
    "userId": "802353016"
  }
}