{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x32cea8c1cbd429d0137a54b73d62b0f4f3ef78c5a5d60f3fbd17a28a6f37afdb",
    "signature": "0x93587b49e16a6f70168725914ce826c1d1a3b2395fe776ebebe9641b413d99c27ff92ef385cc7893db8c6d0b4cbf88fa12fbc2ea62ab87911feb286e39c0a5501c",
    "signer": "0x17344E6DedAEa4AE67D9C81F3c6B263ce0281Fea",
    "userId": "731357224"
  }
}