{
  "manageEntity": {
    "action": "Save",
    "entityId": "53565",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x46cad670610acafce4a6323f1dbd8c7a307f2d93e046851f0987cadac6c90c05",
    "signature": "0xb6f5e5d57fc321f0acaf1e72334868ea1445e73f09dcf666ca1ef5f38e2812be346b69bf2cbdf90a8841e53219b8ee34220c02c711870ee2f4fb2f43df3500a71b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}