{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xf25a177e168c97064f2f7391d4dd8be2d0f3ea1dbadc47b01eaa2252dfb866cb",
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    "signer": "0x369dD45047998ccCC8699316C910B0D73eDf8A6D",
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}