{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x71803572f1a66f301db33810077c5b0548ef21c2aac5500011c55f92787ea581",
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    "signer": "0xED6528a4b401e502a0f68289b565Ddc51Ee03B14",
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  }
}