{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8eb93906783298a288e4332a129fbe568f5dbc168d6f9488e9ea7779efa853b1",
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    "signer": "0xF6A82B34B4713Bf1d32BB94CC73A0acF37d4C822",
    "userId": "487342441"
  }
}