{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x88a72e593bc636d03ecdce09be539a8d43306e766b31ecfbc90efccb42f4c5b2",
    "signature": "0x3a296a5d400911791d0ac1bad71d728ca648f37e60f907a12fa1b1933fae12b82841a6c48d387d47006e10b70f7a355c0fd761486671c4462250cf43b4a4083a1c",
    "signer": "0xB8f8B5d3F3Eb7280BbD8BF51709df5Cd46820Fe5",
    "userId": "234784224"
  }
}