{
  "manageEntity": {
    "action": "Save",
    "entityId": "764080315",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdddb715a5e6a6d7386aa475f29351f9e455de108b4ee9cf33c4511d32232e4f7",
    "signature": "0x4c2fe8b1013e4514a3fb857d0ea747b20f67482d64ae853a0a15bcb9b632eaef461edb6459c70ed2097d0e71303b5fbff78e1153f2563495086f7cf082ed86ab1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}