{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x702614207b553a13308952ee94410bf9a9aa8c41dd8dfa47b649ba7472b3565f",
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    "signer": "0xaFd161d820E995347aA8EDC1F836F1ffc660729A",
    "userId": "685507057"
  }
}