{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd4d1353280fa560257566cbb8840c6a3c79d16bf1d7a6ddfe13da711f624ce10",
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    "signer": "0x9F1ba5048fD5fF69319Fd398E4e181b46451aB6b",
    "userId": "539136535"
  }
}