{
  "manageEntity": {
    "action": "Save",
    "entityId": "765461626",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe6814fe6c760ce11f361da22d90ab00156968b1b0318cb5191dad199bb1472cf",
    "signature": "0x1a0a3901846a2a0574e0317da4f9bde717357bad19289003e1813e12c2f233104715faaa585f685c3ab0bce9473485de287914e271759bbd3e22331bbf519c621c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}