{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x88ceed91a4e4c4a80f848127b0ba3b241315f6e0c2f920e2da1812e253feb36e",
    "signature": "0xdd0ac511da1be8ff369a4d9a0b88c12c24b5a89ddb027e1d8bad189cd63167697dd18abc1936b61818f61fc158f999856a9ab83cb716ce1d8d2ee45643d1cbdb1b",
    "signer": "0xC316FCfb333BFe861A645a3B79c6816b0F2f3bCA",
    "userId": "994976921"
  }
}