{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x111ec1e0714ec3b23b5ddec683e47fee877e701cdfe7309f9d66275677e9fa57",
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    "signer": "0x5e8F7DFF9430470B66AbB149eBF4b74c311B2bFc",
    "userId": "125844630"
  }
}