{
  "manageEntity": {
    "action": "Save",
    "entityId": "624377100",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd90f458a50f075b9715ab7bdfc9c67a53189b4a53287f1c33a13d712019109ea",
    "signature": "0xd5ee08489e4157d812e6755611718cde3fb103e53d9eacc6663c018a4fb1cbbe5daaf0f80e6b03c1c6bfdd0423e529e0d6654a8e37c53c433e16fb328c7e624f1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}