{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6bec4126e282da8e497267e44e673480644dbb364373c1828021bfd54d7c8a7f",
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    "signer": "0xA034BC2bA0D3cbcAc5a449e718F96bAE568b17BC",
    "userId": "658662106"
  }
}