{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe70dbc6e2323a42c0fd16b12f044e3b0c22381c07fc424edc3263115e7eb6452",
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    "signer": "0x911F705554cbb79211D9281C72F158Aa47b0aC16",
    "userId": "426200974"
  }
}