{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x22ad1c78a493b04533dbc7ece498493aa6ad15bcd798442b36eba55bdf64f8f2",
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    "signer": "0xDA5EF39662B4ef70B52C25F33b5637165C93DE3c",
    "userId": "479039338"
  }
}