{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x21a215ee89a0c1994b23e1b77da515afb7669aa02266a99a0c941a42099d93b6",
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    "signer": "0x7c8f2818C1D8bfDbEea93cbB0632Ffda4E5Dc18B",
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  }
}