{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6edeaf90b8059c4ecdd961c1582d307fe0249ff5cc85a793a3a1e70653170f9b",
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    "signer": "0xf402964FB9093240a3fefa27eA55793248148d24",
    "userId": "277139387"
  }
}