{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9e4cd089d2dfb67beade523fb3e77a8a56117aa4362266bff066a827f0b91290",
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    "signer": "0x36DC01256d97Bf62Df713AA6a6009d4A506F0Dbf",
    "userId": "27472500"
  }
}