{
  "manageEntity": {
    "action": "Save",
    "entityId": "1724954035",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7e1a3d1078b8a5e8e03bcec6531abc51bca6a358e6bbbbfc0a8f9b77e6b3ee4a",
    "signature": "0x9adcac60d5aac1793fd095a146f65d0ca553bbc40372d3553b60f117a52a8b3163e7a43cb4ec332cfc9d609e3324fb1599ac7359cebdb97603de0fe35f1463991b",
    "signer": "0xd648B38B61b65e4F8df57D4EE65560D8DaacFDb2",
    "userId": "277314120"
  }
}