{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x21ca1181f701d92025575a73730275ff9db8b1e1d12387365ac85e40590ea15e",
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    "signer": "0x9e2521FaffBd1356fbEC0f30529b13fa87f0AAff",
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  }
}