{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3b56c8e9348872b915937c6656b2b94388992dded75e93f419efde54428e4409",
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    "signer": "0x14b61674DBb63331349B6963490b991E7c568769",
    "userId": "324948380"
  }
}