{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x36860781a958f59641e3a33dcac66cc9e6e4fed047474baf76c2601488166bb9",
    "signature": "0x60bab5677d4beb92d1629f7cec5084e03d13e120fb14e2de11704533c9f5a1e30e3d8204186032d5feca721ee22a590f5ced5948d1ef87548e61604bf07cd8591b",
    "signer": "0x7e9720d8C73bd719B01E9408E15C2884254beC2a",
    "userId": "234846549"
  }
}