{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb0b2912a0954f4e8e4db473008f1f8835cccfb6ca98c2e9b9f7f730fe0af3e42",
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    "signer": "0x31529A3Ee1E76583c6Ed2fd2f4e4152094786Ffc",
    "userId": "681447296"
  }
}