{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x93ea2f2fa151317cdd956a36f62a4f9d0e1c8d5a063903296e028cc577f062be",
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    "signer": "0xF2AB057a0d89b7CA5daF37a942E56daF60588947",
    "userId": "370496076"
  }
}