{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6f417aa3bd9884b69fe55c3190e440506eea2fbe201661d8c635f80567401778",
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    "signer": "0xA34B3bD78D03f9068F43c5eB822004a3b9846962",
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}