{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5f7a3770cd0196bfa305587a57f9873fc88ca78fbfaa118b08688141fcdf5ec7",
    "signature": "0x843846230fa60c1a11d281c17bd13477f9421d13bb32070396bfa2e70fe534fb0d370eb424bb2120b4aa966d37e5dc3eb7b29921010f95dd8dcaa9539ed32cc91c",
    "signer": "0x0285a1325511eE20758d11C287Fe880f6795bA97",
    "userId": "966079368"
  }
}