{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x95893382dcd874e5121d3f0e374c609bf867b0a135d201febf933ccd021c1277",
    "signature": "0xfebb82be19cb5fcc705a6f3bddcc73f28a6a431b29b43952cbe9fea4e7e35c7e34b97131bf31bda12e287a82cd2a32395b159761bd5b6427fbe9fea7893f237d1c",
    "signer": "0xBe9B6f5cb472cCcDCEFf1f823a3Ec32D93CcF9C1",
    "userId": "944117628"
  }
}