{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xbcdfc1379787810ac677c28d647644132953157a4217e8339c7e189bc5d53503",
    "signature": "0x7d082b4abe046d930254c05c4a725a09282c54ae1f468ed3472af75271228636776df0709b97f399921e6a76760f15e7eef21182091d9a99f92ffd7fd341261c1c",
    "signer": "0xaf496827546F9662eC424Ac93F0f119E5219d62d",
    "userId": "726502507"
  }
}