{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3687ae99aff0112d57f818daa630c68fde48e24f2f9bdfea30ef8687100ba0f7",
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    "signer": "0xa900b068954c988c4e1FA3E4D25af93c8aD57346",
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  }
}