{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1c708c6759204302807eb1e4786e284d5620fe3886d6fe2ddced2c94a6e2bed8",
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    "signer": "0x0e0c30BfE07345c3f99bD1965E2A89a981edEbca",
    "userId": "282723531"
  }
}