{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x959e648d43a95d24930cb835ac25916512dc7cc1859ea35a0e39761e167d556c",
    "signature": "0x1e28bbe69c65f8fb326ae734ba91e13733105cca92842b3006a736b1941ecc3e204a13ada4c883a735ab63db7f7f0f623ea5185aa0cdcfc815fbc57001b5b6571c",
    "signer": "0x2D9056572e68b1F539F216341A7B9018d2552436",
    "userId": "709948398"
  }
}