{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1a4a0ba299ab355c79f21be69d5b9cffe9528d8e3b907c979170e208e672846c",
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    "signer": "0x0bD40F3b618d9Bdc603481CCF92f6C73f69D7B50",
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  }
}