{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x81b59112f28543951015dfe951df16b92f2cf2c179f4e93001ed6ede46c75696",
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    "signer": "0x5e4Fc9D12718F924F2A6498FDcB379AA8e295797",
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  }
}