{
  "manageEntity": {
    "action": "Save",
    "entityId": "29217",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x250c76f3ddef2ef36076ecbdca283ed667f6d6a260b4b492d2544e1cbe3fde50",
    "signature": "0x261868642a19de4453ccc14e860716bac9c62291339aa9b7d0ec9490249baa4b0113fc7724c1c0a4989986da189c68a9890a5f3b4be08efaa40d293c277008041c",
    "signer": "0xbcF27CD259a120e92577BC7a7EB95670b3A0E2fA",
    "userId": "105402635"
  }
}