{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x71a6cf6ca42a8983c60b7c7d98849728c0ef36c213163a8dd50b6f2bfeabe943",
    "signature": "0xec03d84e1c8c3f85ef23a7f030df08934a65c8bd68a0d0f7a149b37090ebba5f566c3a0b80914236b759970cd7e06b42a541beec14234699f9f567f4dbd43da41b",
    "signer": "0x932E1F39be01A4aBc6D0f004d1d2E075Ee939F7c",
    "userId": "364835068"
  }
}