{
  "manageEntity": {
    "action": "Save",
    "entityId": "169543966",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x71e5a7df2736e27618720db62af9df4f72c75e76aa89e2efbc839a495640c639",
    "signature": "0x779279dbc1d32b011d569fd01c7a5c056a93d721016cf8f7b10494a166bb1ffd1d023af00001924512b549795e633d4c7c985443f9dea51b5e8735404b4729041b",
    "signer": "0xD9254B079e0e1571E56512C57188F2eec899054f",
    "userId": "854498636"
  }
}