{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4ae25c0b2393086ac7e31cfa864a79b72a062420f2a42497b64d822836339d61",
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    "signer": "0x6c375179bc3faF427A59c32F6Ddd4801EA156Dc5",
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}