{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb4ad1304e8356b8e4ce1e9e42b64a3f12a06c898737f454a2fb7b8fbd909d867",
    "signature": "0x0e6ab7edca4959be27df69dbef28af5993c47ca894dc989389b61ea9c1cc787c22a495766bbf7cd27ee5de541e730e4a6379bf84d53e4c5cd0450e3f9c17e3aa1c",
    "signer": "0xe7293f8b43D4078aB99171ccd3740696D1B2C993",
    "userId": "511357749"
  }
}