{
  "manageEntity": {
    "action": "Save",
    "entityId": "872572240",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x526287c0ffef7397f9086867141de2c450c952f6cfa3dc90b730f4cffd09550b",
    "signature": "0x0633304297882aac22a117841a274527ea7f80e7eadb3b6982c24587502571133dfd33207ebee1b20bd4a1e9dbc3e03cbd8798f0aaae44189d7cd40551440ac01c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}