{
  "manageEntity": {
    "action": "Save",
    "entityId": "1334050521",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5da4f79fb77aa975eb837439ac74829dca877fee22364ded0cc1ffb74c352739",
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    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}