{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x74c0f6febe3378a36b03637a3b2b7205fc992e928672e4960d4a78033af9b7b4",
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    "signer": "0xa94e4C47a5C11B5C0b4EC90e5166c3AF602dA094",
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  }
}