{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2a366149d0e9433700ab697f907bfc0f541ef956c59b34ed15418c86aebe00e9",
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    "signer": "0xf7452B833E3f2AbEFf85ADF20dBa192F149C2Cde",
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  }
}