{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb2535782c0bf1a7d3665e300344ea3087fd9b06584675401fc8b9942a590d3d4",
    "signature": "0x7af063a2ba7d9c188935ae5f756f57711aa520b1a8fb4ac9f37b2e121297faee01b2f321630548216357594a96ab2287deb9acd7a8bf31347841c2ec6ecc31dc1b",
    "signer": "0x06480A66A296C66bd7377A0959c93A5E65fC696b",
    "userId": "567768542"
  }
}