{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x475165b7ad8e7a68c9e92e76e3c2395ee62edfdda075651e61cd7750fdcf7a42",
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    "signer": "0x7eF743e051bA3fCD83e2139d39e43EEa73D8aCB0",
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  }
}