{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xcb518ee3844cefd70c91c9417d434aa1c1375706445e35abdcc8179065c5a33c",
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    "signer": "0x7096648dBa53458d26Aad911D39543f872DF6f52",
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}