{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6fb08ad63176e7184837de171a7e2b9fb73aa4441ca46dcde5a42e9591f279dc",
    "signature": "0x088565d6ac79784a4d77e366f82aa5a58edc9b83e481ffc325907f2b403ce3fc0b097df4e01431e9eb36f6a667f7c8a84bd6354357cd2e117f91ba03468836111b",
    "signer": "0x6E8Af7Cd3AA4a0117eD165a57738d0E2167aBd40",
    "userId": "618341133"
  }
}