{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x67f5a07b9b33b1c8be8a1d01374f0d27a2e7e3b03b940b4dc25ea373be80981a",
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    "signer": "0x025eC7902537A31aff29fFCC91267044DbE7Ca6b",
    "userId": "598837753"
  }
}