{
  "manageEntity": {
    "action": "Save",
    "entityId": "82521",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7495a8214d34c17890ce1ad6fc5cf5ba07e09e0c504c5046071014406d8e3e41",
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    "signer": "0x0946c54D7Bd95A069DD100F93Ec74b01b6023523",
    "userId": "230796408"
  }
}