{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3f3636c13cf5135527ac745f48f7779ee0ab21aec5e6c8063d6e38d5ff8936fe",
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    "signer": "0x0017a20ec4F265018a6A8800dcEb4B26218F8931",
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}