{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x704d1c432a205df15590539875dd2b983dc0f70bcff839d40bd781d13264b9e2",
    "signature": "0x23db438760e1cba151abee4d76b997ab47c73e069b50822fbd666d0d734f38990ee817089e4213c542e01add19d2f358acf3102b46991e5b65f3ca242f3ac7411c",
    "signer": "0x76D8d8830bD27953c4392796Ccc22F34B8F11E32",
    "userId": "610580501"
  }
}