{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0bff401cf704323719988699f18298e763e003c96bbe93e9c38ce0159188e2ec",
    "signature": "0x4bdc5d94fe1b650f599a24bfe00ae2dca594b56010405e16fcf8ed1c8309415361a1d17022cb19ac5e985d4c43a24d14cc47578a64de47a408564e4b8761dae51b",
    "signer": "0x9d5d1f1a59bB255396F7F1e7DeB307A4F66f15ec",
    "userId": "429311703"
  }
}