{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8f31e1c445723ed8a68dd53e14efef35115196338cf41f604e5238e68671d41a",
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    "signer": "0xA6750a3CE8C84a6d249dFb455863F0fBbd7aAa79",
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}