{
  "manageEntity": {
    "action": "Save",
    "entityId": "1179766090",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2328d96ea11a771f132b2b264d5e5f20b5af3fb4808864c0c537c79cd9401e5f",
    "signature": "0x5788806a582768650704ad382bc78f915523dfe9e6774693bf040d4df0eff3db76fd8f26fd614f3bd14cb4de112e8f2225d353064804354f98649f4d11bf22471b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}