{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9b0b1a512abe8d263ef05309bf1684980b3b6b3ba8fcb33c6e6a6b976ff34248",
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    "signer": "0x1152ec8727A87a59035c477aBE836F5C801764FB",
    "userId": "724467448"
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}