{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe083321490200c291467f578d26fd477491c2e7ffa7f489251f0f9b9d81da04b",
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    "signer": "0x3b17E93874f5762fac5773361b2295e1574245f3",
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}