{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x42e84ad1beb1f57a22e17ed2f42dfa1b0090f5658d3a5d874cb5377974718dc4",
    "signature": "0x5754efb1f08088ff00b5ded1ad996be4a4827c45e2f2f01b89c18ec99197af3d62c69c54164c2a385ed251eadcc0687912d89da28ab0cb5529c0c1d137a7e0761b",
    "signer": "0xae6A06941Dc387764CB144aA1A9AA46fccF6236c",
    "userId": "130378018"
  }
}