{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1a392e1365c3d68770e43776e2323e13e14dce10c79affed8fd491b547ee8f14",
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    "signer": "0x084461aB89529629A39a0102D58c480Ff1E146A8",
    "userId": "611541555"
  }
}