{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9b525622c2bab1749a7c12d8fb61a933708533c59c90a1d19e7f1be44b3fdc8c",
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    "signer": "0x27F2E26cC9cB487D2b507c7d68d166794c49EC3d",
    "userId": "776160117"
  }
}