{
  "manageEntity": {
    "action": "Save",
    "entityId": "783158352",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5302b51d8857f4fb68ce970851d74a0577ed8831ee6b0867d70b3e93ab39c5cc",
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    "signer": "0x4D7d71b11CDc5134427DEe9E150Ae1eA8a881a20",
    "userId": "523512173"
  }
}