{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9a4f65f2a47cd55b31608177ed003da3680ef2938ed1e2e5a4b0cbc55bf3a79a",
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    "signer": "0x2ea66722Eb27B897cAa314a41c784f25D1eCB4bF",
    "userId": "488132087"
  }
}