{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0cce01423c465992e2aa44f0ecc3084f4a831225612ca4c971331a09a3874f5d",
    "signature": "0x5ced9ba9f46728a2c8282144a0f49492d103e7cfe49a4af6c2e74ecbe6ea29f20cd291cb6c335f417deabd0f89bd3a269c5a8818e530acf2cbe51b9299133bc91b",
    "signer": "0x60495664C60cF8427e991465f31ABe2F9dC345A5",
    "userId": "696978255"
  }
}