{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8d550c68a8d795cdc0388b727d522cf8e56d794d4f58eedfdc17ece416ddf6ad",
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    "signer": "0xa0ac09e24A8250b0177593dD9e51C41452dC6D56",
    "userId": "613767949"
  }
}