{
  "manageEntity": {
    "action": "Save",
    "entityId": "1320548787",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xae65531ae753d0d35dcb746ff42db70516f3e8af6fb136921e674c29fb1ac0c8",
    "signature": "0x1a3bf253c90a05ae32683cb19353476b3e56b9516e366c2f6d26e43ff094d0f341012ad2cde48865da1d8ec74adf1d18a3814ae3fa45a43cda602262dcc5fbd71b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}