{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xad6c8cf632cbbb81737fb3f7d18370a635f81a0cace6c0be25ca2bfdb3e9cf72",
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    "signer": "0xFD8659E4715De55838a1954d2D0e1132BC5FBeCf",
    "userId": "992500735"
  }
}