{
  "manageEntity": {
    "action": "Save",
    "entityId": "147244417",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc5953551c6459677a03d03cb6bda36f69fb06c60986fd92702f296331c4b9ec0",
    "signature": "0xdd3ca2ec638d9fef9f98983d21e0cca1306b81d6c552722d7e0b0afc1305fee03c406e2b97fa21fea85a7b6133a6b21ee7ca358bde5c3104498e2b535e596b931b",
    "signer": "0xBBBE9eFc177a4E708d317195Fa81aA6E8E2F7E92",
    "userId": "557135181"
  }
}