{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x988a6f5298fec7cbf9157ae3b210ded467f77fe7f87260ffbbc28066de4fae5b",
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    "signer": "0xC888d1fD9065F0AdF661c54a6bA27c25E56ba3fC",
    "userId": "956687976"
  }
}